Guide · Metabolism
How to increase your metabolism
Short answer
You can raise how many calories you burn, but mostly through movement, not pills. Everyday movement (walking, standing, chores) varies by hundreds of calories a day between people. Strength training adds muscle, protein costs more to digest than carbs or fat, and sleep keeps appetite in check. Caffeine and green tea add a little; most "metabolism booster" drinks add almost nothing.
What is metabolism, in calories?
"Metabolism" in everyday speech means how many calories you burn in a day. That total has three parts:
| Part | Share of the day's calories | Can you change it? |
|---|---|---|
| Resting (basal) metabolism: keeping you alive | About 60–70% | Slowly, by adding muscle |
| Digesting food (thermic effect) | About 10% | A little, by eating more protein |
| Movement: exercise plus everything else | About 20–30% | Yes, a lot |
The last row is the one you control. Researchers call the non-exercise part NEAT (non-exercise activity thermogenesis): walking, standing, fidgeting, housework. Between two people of similar size it can differ by up to 2,000 calories a day (Levine, 2002).
What actually boosts metabolism
| What you do | Why it works | Rough effect |
|---|---|---|
| Move more through the day (steps, standing, stairs) | NEAT is the most variable part of daily burn | Hundreds of kcal a day |
| Exercise | Direct calorie cost, plus a short afterburn | 200–600 kcal per session |
| Strength training | Muscle burns about 13 kcal per kg a day at rest; fat about 4.5 | Small but lasting |
| Eat enough protein | 20–30% of protein calories are spent digesting it, vs 5–10% for carbs and 0–3% for fat | Tens of kcal a day |
| Sleep 7–9 hours | Short sleep raises hunger and lowers how much you move | Indirect |
| Caffeine (coffee, tea) | 100 mg raised resting metabolism 3–4% for about 2.5 hours | Tens of kcal a day |
Sources: Westerterp, 2004 (protein), Wang et al., 2010 (muscle vs fat), Dulloo et al., 1989 (caffeine).
Does metabolism slow down with age?
Less than you'd think. A study of more than 6,600 people aged 8 days to 95 years found that, adjusted for body size, metabolism is roughly steady from 20 to 60, and only declines after 60 (Pontzer et al., Science, 2021). Most mid-life weight gain comes from moving less and losing muscle, both of which you can change.
Signs of a slow metabolism, and how it's tested
Most people don't have an unusually slow metabolism; weight gain usually comes from moving less and eating more. A real medical cause, such as an underactive thyroid (hypothyroidism), comes with other symptoms:
- Tiredness that doesn't go away
- Feeling the cold more than others
- Weight gain without a change in eating
- Dry skin and hair
- Constipation
- Low mood and aching muscles
Do metabolism booster drinks work?
| Drink | Evidence | Verdict |
|---|---|---|
| Black coffee / tea | Caffeine raises metabolism a few percent for a few hours | Small, real |
| Green tea | Catechins + caffeine: about 1.3 kg more weight loss in pooled studies | Small, real |
| Apple cider vinegar water | One 12-week Japanese trial: small drops in weight and visceral fat | Small, limited evidence |
| Cold water | Drinking water briefly raises energy use slightly | Negligible calories |
| Jeera, ajwain, methi, lemon-honey water | No good human trials on metabolism | Unproven; fine as a low-calorie drink |
| L-carnitine drinks | About 1.2 kg more weight loss at about 2 g a day across 37 trials | Small, real; dose matters |
The single biggest win from any "metabolism drink" is usually what it replaces: a 330 mL sugary soft drink has about 140 calories. Swap one a day for water and that's about 4,000 calories a month. More detail in do fat loss drinks work?.
A simple plan to raise your metabolism
- Add 2,000–3,000 steps a day to whatever you do now. Take calls standing, use stairs, walk after meals.
- Lift something 2–3 times a week: weights, bands or body-weight exercises.
- Get protein at every meal: dal, paneer, curd, eggs, chicken or fish, about 1.2–1.6 g per kg of body weight a day if you're trying to lose fat.
- Sleep 7–9 hours, at roughly the same time every night.
- Drink water, not calories. Coffee or tea without sugar is fine.
- Measure your waist monthly. For Indians, above 90 cm (men) or 80 cm (women) is the point to act (Misra et al., 2009). See the visceral fat guide.
This page is general information, not medical advice. Talk to a doctor before starting a supplement or a weight-loss plan, especially if you're pregnant, on medication or managing a health condition.
Questions people ask
How can I increase my metabolism naturally?
Move more through the day, do strength training two or three times a week, eat protein at every meal, and sleep 7–9 hours. Everyday movement makes the biggest difference: it can vary by hundreds of calories a day between people.
How can I speed up my metabolism fast?
The fastest lever is movement: a brisk 30-minute walk burns roughly 120–200 extra calories the same day, and adding steps all day adds more. Strength training and protein help over weeks. Nothing safe speeds up resting metabolism dramatically overnight.
What is the best drink to boost metabolism?
Black coffee and green tea have the best evidence, and the effect is small: caffeine raises metabolism by a few percent for a few hours. Plain water is the best swap for sugary drinks, which matters more.
Metabolism kaise badhaye?
Roz zyada chalein (2,000–3,000 extra steps), hafte mein 2–3 baar strength training karein, har meal mein protein lein (dal, paneer, dahi, ande), aur 7–9 ghante soyein. Koi bhi drink akele metabolism ko kaafi tez nahi karta.
Does metabolism slow down after 30 or 40?
Not much. A 2021 study of 6,600+ people found metabolism, adjusted for body size, stays roughly steady from 20 to 60. Weight gain in mid-life mostly comes from moving less and losing muscle.
Do metabolism booster supplements work?
Most have little evidence. Caffeine, green tea catechins and L-carnitine have small, measurable effects in trials. Products promising large or fast weight loss are overselling.
How do I know if I have a slow metabolism?
Most people don't have an unusually slow metabolism. Real medical causes, such as an underactive thyroid, come with other symptoms (tiredness, feeling cold, dry skin). A doctor can check with a simple blood test.
Is there a test for metabolism?
For the thyroid, a TSH blood test. Resting metabolism (BMR) can be measured with indirect calorimetry, but the Mifflin-St Jeor formula, which uses your weight, height, age and sex, gives most people a good estimate.
What is a good homemade metabolism drink for the morning?
Black coffee or unsweetened green tea: caffeine raises metabolism a few percent for a few hours. Jeera, lemon or ajwain water is fine as a low-calorie drink, but no good trial shows it raises metabolism. Skip the honey or jaggery.
Sources
- 01Levine J.A. (2002). Non-exercise activity thermogenesis (NEAT). Best Practice & Research Clinical Endocrinology & Metabolism 16(4):679–702.Peer-reviewed · review
- 02Westerterp K.R. (2004). Diet induced thermogenesis. Nutrition & Metabolism 1:5.Peer-reviewed · review
- 03Wang Z. et al. (2010). Specific metabolic rates of major organs and tissues across adulthood. American Journal of Clinical Nutrition 92(6):1369–1377.Peer-reviewed · humans
- 04Pontzer H. et al. (2021). Daily energy expenditure through the human life course. Science 373(6556):808–812.Peer-reviewed · 6,600+ people
- 05Dulloo A.G. et al. (1989). Normal caffeine consumption: influence on thermogenesis and daily energy expenditure in lean and postobese human volunteers. American Journal of Clinical Nutrition 49(1):44–50.Peer-reviewed · humans
- 06Hursel R., Viechtbauer W., Westerterp-Plantenga M.S. (2009). The effects of green tea on weight loss and weight maintenance: a meta-analysis. International Journal of Obesity 33:956–961.Peer-reviewed · meta-analysis
- 07Kondo T. et al. (2009). Vinegar intake reduces body weight, body fat mass, and serum triglyceride levels in obese Japanese subjects. Bioscience, Biotechnology, and Biochemistry 73(8):1837–1843.Peer-reviewed · humans
- 08Talenezhad et al. (2020). Effects of L-carnitine supplementation on weight loss and body composition: a systematic review and dose-response meta-analysis of 37 randomized controlled clinical trials. Clinical Nutrition ESPEN 37:9–23.Peer-reviewed · meta-analysis · humans
- 09Misra A. et al. (2009). Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians. J Assoc Physicians India 57:163–170.Peer-reviewed · Indian consensus
- 10NHS: Underactive thyroid (hypothyroidism), symptoms and diagnosis.Health body (UK)
- 11Mifflin M.D., St Jeor S.T. et al. (1990). A new predictive equation for resting energy expenditure in healthy individuals. American Journal of Clinical Nutrition 51(2):241–247.Peer-reviewed · humans
Keep reading
- Comparison · Fat lossDo fat loss drinks work?Fat loss and fat cutter drinks checked against research: green tea, ACV, jeera water, L-carnitine and Japan's HMPA "fat-burning water". What works, and how much.→
- Guide · IngredientWhat is L-carnitine?L-carnitine carries fat into your cells' mitochondria to be burned. What it does, its real benefits, veg and non-veg sources, the forms, and how much people take.→
- Guide · HealthVisceral fat: the Indian guideVisceral fat is deep belly fat around your organs. Why Indians carry more at the same BMI, the Indian waist cut-offs (90 cm men, 80 cm women) and how to cut it.→
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