10 Ways to Speed Up Your Metabolism
/“Coach, how can I speed up my metabolism?”
I’ve heard this question from athletes and clients for years, especially when progress slows or body composition stops changing despite consistent training.
The honest answer is less exciting than most metabolism headlines: you cannot dramatically transform your metabolism with one food, supplement, drink, or workout. Genetics, age, body size, hormones, and lean muscle mass all influence how much energy your body uses.
However, that does not mean your metabolism is completely outside your control.
You can increase your total daily energy expenditure, preserve metabolically active muscle, improve how your body handles fuel, and develop habits that support long-term metabolic health.
The most effective methods are not shortcuts. They are the same fundamentals I emphasize with swimmers: strength, movement, nutrition, sleep, recovery, and consistency.
Can You Really Increase Your Metabolism?
You may be able to influence your metabolism, but the effect is usually more modest than advertisements and social media posts suggest.
Your total daily energy expenditure has several main components:
Resting metabolic rate: The energy your body uses to maintain essential functions such as breathing, circulation, and temperature regulation.
Thermic effect of food: The energy required to digest, absorb, and process food.
Exercise activity: The energy you use during swimming, dryland training, running, cycling, or other structured workouts.
Non-exercise activity: Walking, standing, household tasks, taking the stairs, and other movement outside formal training.
When people ask how to increase metabolism naturally, they are usually thinking only about resting metabolism. In practice, increasing daily movement, maintaining muscle, and training consistently often make a greater difference than trying to force a small change in resting calorie expenditure.
One of the most common questions I hear is, “How can I speed up my metabolism?” Whether you’re looking to feel more energized, maintain a healthy weight, or simply build a lifestyle that works for you, understanding how your metabolism works is the first step. While genetics play a role, there are plenty of ways to naturally boost your metabolism and make your body more efficient at burning calories. Let’s dive into some practical strategies you can start using today.
What Actually Supports Metabolism?
| Strategy | Effect on Resting Metabolism | Primary Benefit |
|---|---|---|
| Resistance training | Modest and partly related to preserving muscle | Strength, muscle, and performance |
| Daily movement | Does not directly raise resting metabolism | Increases total daily energy expenditure |
| Protein intake | Produces a temporary thermic effect | Muscle repair, recovery, and satiety |
| High-intensity exercise | Creates a temporary post-exercise effect | Fitness and training efficiency |
| Hydration | Does not produce a meaningful lasting boost | Supports training and temperature regulation |
| Adequate sleep | Primarily an indirect effect | Recovery, appetite, and glucose regulation |
| Frequent meals | No consistent metabolic advantage | May support individual fueling preferences |
| Green tea or spicy foods | Small and inconsistent effects | Not a primary metabolism strategy |
1. Build and Maintain Muscle With Strength Training
If you want to know how to improve metabolism, strength training is one of the most productive places to begin.
Muscle tissue requires energy to maintain, although the effect is not as dramatic as some fitness claims suggest. The greater benefit is that resistance training helps you preserve or build lean mass while improving strength, movement quality, insulin sensitivity, and physical performance.
A systematic review and meta-analysis found that resistance training can produce a modest increase in resting metabolic rate. Individual results depend on training experience, program design, body composition, age, and nutrition.
For swimmers, I generally recommend two or three focused dryland sessions per week, depending on the athlete’s training load and recovery capacity. The goal is not to burn as many calories as possible. The goal is to build strength that transfers to the water without compromising important swim sessions.
Useful exercises include:
Squats and split squats
Deadlifts and Romanian deadlifts
Push-ups and presses
Rows and pull variations
Loaded carries
Core stabilization exercises
Jumps and medicine-ball throws when appropriate
Your exercise selection should match your experience, mobility, injury history, and swimming schedule. Excellence lives in the fundamentals – consistent, well-executed strength work is more valuable than a complicated “metabolism workout.”
Related read: Type 1 vs. Type 2 Muscle Fibers
2. Increase Your Total Daily Movement
Formal exercise is only one part of your daily energy expenditure.
Even athletes can spend much of the day sitting between training sessions. Adding more low-intensity movement is a practical way to use more energy without placing substantial additional stress on the body.
This can include:
Taking a short walk after meals
Standing during phone calls
Using stairs when practical
Breaking up long periods of sitting
Walking for short errands
Completing light mobility work between work sessions
These habits do not suddenly make your resting metabolism faster. Instead, they increase the amount of energy you use across the entire day.
The American College of Sports Medicine’s physical activity guidelines recommend regular aerobic activity together with muscle-strengthening exercise at least two days per week.
If you already complete a high volume of swim training, you do not necessarily need another exhausting workout. A walk or easy mobility session may be a better addition than more high-intensity exercise.
3. Include Protein in Your Main Meals
Your body uses energy to digest and process food. This is known as the thermic effect of food.
Protein generally has a higher thermic effect than carbohydrate or dietary fat. A review of the available evidence found that meal size and macronutrient composition, particularly protein content, influence the thermic effect of food.
That does not mean you need an extreme high-protein diet. It means including an appropriate source of protein in your main meals can support muscle maintenance, training recovery, and satiety.
Useful options include:
Eggs
Fish
Chicken or turkey
Lean meat
Greek yogurt or cottage cheese
Tofu or tempeh
Beans and lentils
For swimmers, protein is only one part of the equation. Carbohydrates remain an essential fuel source for demanding pool sessions. Removing carbohydrates in an attempt to burn more fat can reduce training quality and make recovery more difficult. Aim to build balanced meals around protein, carbohydrates, vegetables or fruit, and an appropriate source of dietary fat.
4. Avoid Aggressive Dieting and Chronic Underfueling
One of the most important ways to support metabolism is also one of the most frequently overlooked: eat enough to support your activity.
Very restrictive diets may produce rapid scale changes, but they can also contribute to fatigue, reduced training quality, loss of lean mass, poor recovery, and difficulty maintaining results.
This is especially important for swimmers. A swimmer completing demanding practices several times per week has very different energy needs from a sedentary adult.
Possible signs of inadequate fueling include:
Declining workout performance
Persistent fatigue
Poor recovery between sessions
Irritability or difficulty concentrating
Frequent illness or injury
Loss of strength
Feeling unusually cold
Disrupted menstrual cycles
Trying to speed up your metabolism naturally and lose weight should never mean eating as little as possible. Sustainable body-composition changes require a manageable approach that preserves muscle and allows you to continue training effectively.
If you consistently struggle with fatigue, unexplained weight changes, or signs of underfueling, consult a qualified healthcare provider or sports dietitian.
5. Prioritize Consistent, High-Quality Sleep
Sleep does not simply switch your metabolism on or off. However, it has an important effect on recovery, appetite regulation, glucose control, decision-making, and training performance.
A systematic review and meta-analysis of controlled studies found that sleep restriction reduced several measures of insulin sensitivity.
For most adults, getting at least seven hours of sleep is a useful starting point, although athletes undergoing heavy training may require more.
To improve sleep quality:
Maintain a consistent sleep and wake schedule.
Keep your bedroom cool, dark, and quiet.
Limit bright screens before bed.
Avoid placing hard workouts too close to bedtime if they interfere with sleep.
Reduce late-day caffeine when necessary.
Create a short and repeatable evening routine.
I frequently remind athletes that sleep is part of the training plan. You do not become stronger during the workout itself. The adaptation happens when your body has the time and resources to recover.
Related read: How Sleep Affects Body Composition
6. Use High-Intensity Training Strategically
High-intensity interval training, or HIIT, alternates demanding efforts with periods of lower-intensity recovery.
HIIT can increase energy expenditure during the workout and produce a temporary elevation in post-exercise oxygen consumption. However, the afterburn effect is generally not large enough to treat HIIT as a metabolism shortcut.
More is not always better, especially for competitive swimmers who already perform high-intensity work in the pool.
One or two appropriately programmed interval sessions may be sufficient, depending on your overall schedule. Beginners should build an aerobic and strength foundation before adding repeated all-out efforts.
A simple conditioning option could include:
5–10 minutes of progressive warm-up
6–8 rounds of 30 seconds at a hard but controlled effort
60–90 seconds of easy recovery between rounds
5 minutes of easy cooldown
This can be completed on a stationary bike, rowing machine, or another low-impact modality. Adjust the work and recovery periods to your training level.
Do not place an intense conditioning workout where it will undermine a high-quality swim session. The program should work as a system rather than as a collection of exhausting workouts.
7. Stay Hydrated for Performance – Not for a Metabolism Hack
Water is essential for circulation, temperature regulation, digestion, and physical performance. But drinking cold water will not meaningfully transform your metabolism.
Research examining water-induced thermogenesis found that drinking approximately 17 ounces of water produced only a marginal change in resting energy expenditure, with no significant difference from the control condition.
Hydration still matters – just for better reasons.
Even mild dehydration can make training feel harder and affect performance. A useful starting habit is to drink regularly throughout the day and pay additional attention to fluid intake before, during, and after training.
Water is appropriate for many shorter sessions. Longer workouts, demanding practices, or training in hot conditions may require electrolytes and carbohydrates.
Sports drinks should not be treated the same as everyday sugary beverages. During prolonged training, carbohydrates and sodium can serve a specific performance purpose.
Related read: How to Prevent Bonking During Workouts
8. Choose Nutrient-Dense Foods Instead of “Metabolism Foods”
There is no single food that substantially speeds up metabolism.
Caffeine, green tea, chili peppers, and certain spices may have small or temporary effects on energy expenditure. These effects are unlikely to produce meaningful results without changes to overall nutrition and activity.
Instead of searching for special foods that increase metabolism, focus on foods that support training, recovery, muscle maintenance, and appetite control:
Lean protein sources
Vegetables
Fruit
Whole grains
Beans and legumes
Nuts and seeds
Minimally processed carbohydrate sources
Whole fruit is usually more filling than fruit juice because it retains its fiber. Similarly, replacing frequent sugar-sweetened drinks with water can reduce unnecessary calorie intake.
However, this does not mean every calorie-containing beverage is harmful. Milk, recovery drinks, and sports drinks may be useful when they are chosen for a specific training or recovery purpose.
Coffee and tea can also fit within a balanced diet, but they should not replace sleep, sufficient nutrition, or hydration.
9. Choose a Meal Pattern That Supports Your Training
You may have heard that eating four to six small meals keeps your metabolism running all day. Current evidence does not support that as a universal rule.
A systematic review of randomized trials found no clear meal-frequency pattern that should be recommended to all healthy adults for improving body composition or metabolic health.
Breakfast follows the same principle. It can be useful for swimmers who train early or need additional energy during the day, but eating breakfast does not automatically increase metabolism. A review of randomized trials did not find evidence that adding breakfast is a reliable weight-loss strategy.
Some people perform well with three main meals. Others prefer three meals and several snacks. Athletes training twice a day often need more frequent opportunities to fuel and recover.
The best meal pattern is one that helps you:
Meet your energy and nutrient needs
Fuel important training sessions
Recover between workouts
Maintain stable energy
Manage hunger
Follow the plan consistently
Do not force yourself to eat every three hours because you believe your metabolism will slow down if you miss a snack.
10. Manage Stress and Respect Recovery
Chronic stress can influence sleep, appetite, food choices, recovery, and motivation. Those indirect effects can make maintaining healthy routines more difficult.
It is too simplistic to say that stress or cortisol automatically causes abdominal fat gain or shuts down metabolism. The relationship between stress, hormones, behavior, and body composition is much more complex.
Practical recovery strategies include:
Planning easier training days
Taking short walks
Using breathing or relaxation exercises
Spending time outside
Maintaining consistent sleep
Separating demanding training sessions when possible
Taking a complete rest day when needed
As a coach, I pay attention to what happens outside the workout. A well-designed training session can still become ineffective when an athlete is underfueled, sleep-deprived, and carrying excessive stress.
Recovery is not time away from the program. It is part of the program.
Best Exercises for Metabolism
The best exercises for metabolism are exercises that use large muscle groups, can be progressed safely, and fit consistently into your training schedule.
A simple full-body session could include:
5–7 minutes of light movement and mobility
Complete three rounds:
Goblet squat: 8–10 repetitions
Romanian deadlift: 8–10 repetitions
Push-up: 6–12 repetitions
One-arm row: 8–12 repetitions per side
Farmer carry: 30–40 yards
Rest for 60–90 seconds
Choose a resistance that allows you to maintain good technique throughout the session. The final repetitions should feel challenging, but you should not need to sacrifice movement quality.
This type of training develops strength and preserves muscle without relying on gimmicks. For swimmers, the exercises and total volume should be adjusted around pool training, competitions, and individual shoulder health.
How to Improve Metabolic Health Naturally
Improving metabolic health is broader than trying to burn more calories.
Metabolic health includes your body’s ability to regulate blood sugar, use energy, maintain healthy blood pressure and blood lipids, and respond appropriately to physical activity and nutrition.
The most useful habits are:
Complete regular resistance training.
Move throughout the day.
Eat sufficient protein and nutrient-dense foods.
Fuel appropriately for training.
Get consistent sleep.
Stay hydrated.
Avoid extreme diets.
Manage training and life stress.
Maintain a healthy amount of muscle.
Follow habits you can sustain.
These fundamentals are not flashy, but they are effective. Your metabolism responds to the complete environment you create through training, nutrition, recovery, and daily activity.
Frequently Asked Questions
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Prioritize resistance training, daily movement, adequate protein, sufficient sleep, hydration, and consistent fueling. These habits can support energy expenditure and metabolic health, but no natural method will produce a dramatic overnight increase in resting metabolism.
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Focus on a manageable calorie deficit while preserving muscle through strength training and sufficient protein. Avoid aggressive restriction, especially if you are training regularly. Sustainable weight loss depends more on consistent nutrition and activity than on metabolism-boosting foods or supplements.
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Eating more frequently does not automatically increase total daily energy expenditure. Choose a meal schedule that supports your appetite, lifestyle, and training requirements.
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Protein requires more energy to digest than dietary fat or carbohydrate, but the effect remains modest. There is no single food that dramatically increases metabolism. Overall dietary quality and consistency matter more.
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Your body uses a small amount of energy to warm cold water, but the effect is too small to be a practical weight-loss or metabolism strategy. Drink water primarily to support hydration, health, and performance.
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Resting energy needs can decrease with age, but the change is influenced by several factors, including muscle loss, body size, activity levels, and hormonal changes. Strength training, adequate nutrition, and regular movement can help preserve muscle and function as you age.
The Bottom Line
If you want to increase metabolism naturally, focus on the factors that produce meaningful, sustainable benefits: maintain muscle, move regularly, fuel your training, sleep well, and give your body enough time to recover.
Do not let claims about metabolism hacks distract you from the fundamentals. A special tea, spice, supplement, or meal schedule cannot replace a well-designed training and nutrition strategy.
I have found that the athletes who make the most reliable progress are rarely the ones searching for the most extreme solution. They are the ones who consistently execute the basics.
Excellence lives in the fundamentals.
If you want a strength and conditioning program built around your swimming schedule, learn more about personalized dryland coaching for swimmers.
About Author
Dan Daly, CSCS, is a professional swim coach, former collegiate swimmer, and strength and conditioning specialist with more than 20 years of coaching experience. Through Train Daly, he helps competitive, collegiate, masters, open-water, and triathlon swimmers improve performance by connecting stroke technique, dryland strength, recovery, and sustainable training.