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Video4 minWith Nikkiey Stott

5 Ways to Speed Up a Slow Metabolism After 40

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This video is part ofMetabolism, Eating More & Reverse Dieting211 lessons · where to start, common questions and more

In this video

If your metabolism feels like it has hit the brakes after 40, eating less and running on the treadmill is not the fix. In this short video, Nikkiey Stott explains why cutting calories too low backfires. Your body adapts by slowing down to conserve energy, so you burn fewer calories, feel tired and hungry, and lose muscle along with fat.

She walks through five steps to get your metabolism working for you again. Fuel your body with enough protein, healthy fats and carbs. Strength train three to four times a week. Raise your daily movement outside the gym with 8,000 to 10,000 steps. Aim for one gram of protein per pound of body weight and get seven to nine hours of sleep.

The last step is to stop jumping between extreme diets and quick fixes like keto, fasting or fat-burning supplements. Nikkiey's point is that getting leaner is not about eating less. It comes from fueling your body, training smart and staying consistent for the long term, not for a 30-day challenge.

Key takeaways

  • Stop cutting calories too low, because your metabolism adapts and your body slows down to conserve energy, so you burn fewer calories through the day.
  • Fuel your body with enough protein, healthy fats and carbs to support muscle, rather than cutting calories to extremes.
  • Lift weights at least three to four times a week, since muscle is what helps you burn more calories at rest.
  • If you only do cardio, you miss the fat-loss advantage of strength training, which helps you keep muscle while you lose fat.
  • Increase your non-exercise activity (NEAT) by aiming for 8,000 to 10,000 steps a day, walking instead of sitting and stretching during breaks.
  • Nikkiey recommends aiming for one gram of protein per pound of body weight to support lean muscle.
  • Prioritize recovery with seven to nine hours of sleep, because muscle grows when you rest, not just when you train.
  • Ditch quick fixes like keto, fasting and fat-burning supplements, and commit to a long-term plan instead of a 30-day challenge.

Questions answered

Why does eating too little slow down my metabolism?

Nikkiey explains that when you constantly eat too little, your metabolism adapts and your body slows everything down to conserve energy. You burn fewer calories through the day, feel tired, hungry and frustrated, and lose muscle as well as fat.

How often should I lift weights to boost my metabolism after 40?

Nikkiey recommends strength training at least three to four times a week. Muscle helps your body burn more calories all day, even when you are not working out.

What is NEAT and how many steps should I aim for?

NEAT stands for non-exercise activity thermogenesis, the calories you burn during normal activities like walking, cleaning and moving through the day. Nikkiey suggests aiming for 8,000 to 10,000 steps a day.

How much protein should I eat to support my metabolism?

Nikkiey recommends aiming for one gram of protein per pound of body weight. Protein is the foundation of lean muscle, which keeps your metabolism running.

Do keto, fasting or fat-burning supplements help fix a slow metabolism?

In Nikkiey's view these quick fixes are not sustainable and usually slow your metabolism down even more. She recommends a long-term plan of strength training, enough protein, daily movement and recovery instead.

Ask Nikkiey

Questions this video helps answer, with what Nikkiey says across everything WarriorBabe teaches.

  • Metabolism, Eating More & Reverse Dieting

    What is NEAT and why does it matter for fat loss?

    NEAT, non-exercise activity thermogenesis, is the energy you burn through everyday movement outside planned workouts: walking, standing, cleaning, even fidgeting. Nikkiey explains it matters because it varies hugely from person to person, and small habits like taking the stairs or parking further away add up to a meaningful increase in your total daily calorie burn.

    Read the answer →

Full transcript

Nikkiey: In today's video, I'm breaking down exactly how to fix your metabolism, why cutting calories too low backfires, and the best workouts to speed things up so you can get leaner, not weaker. Let's get into it.

Step number one: stop cutting calories too low. You think, "I need to eat less to lose weight." But here's the problem: your metabolism adapts. When you constantly eat too little, your body slows down everything to conserve more energy. That means you burn fewer calories throughout the day. You feel tired, you feel hungry, and you feel frustrated. You lose muscle, not just fat, which makes everything worse. Instead of cutting calories to extremes, the goal is to fuel your body correctly, eating enough protein, healthy fats and carbs to support muscle and keep your metabolism working for you, not against you.

Step number two: strength train to build muscle and burn more fat. If you want to speed up your metabolism, you need to lift weights. Muscle is the key to burning more calories at rest. For every pound of muscle you build, your body burns more calories all day long, even when you're not working out. But if you're only doing cardio, you're missing out on the biggest fat-burning advantage. Strength training helps you preserve muscle as you lose fat, boost your metabolism naturally, and stay strong, lean and energized. If you're not lifting at least three to four times a week, now is the time to start.

Step number three: move more outside of the gym. Another way to fix your metabolism is by increasing your daily movement, not just through workouts, but everything you do outside the gym. This is called non-exercise activity thermogenesis, or NEAT, which is just a fancy way of saying the calories you burn during normal activities like walking, cleaning and moving throughout the day. If you're sitting all day and then just working out for an hour, you're missing out on a huge fat-burning opportunity. Instead, aim for 8,000 to 10,000 steps per day. Stretching for light movement during breaks. Walking instead of always sitting. These small changes add up, and they keep your metabolism active all day long.

Step number four: prioritize protein and your recovery. If you're over 40 and struggling with a slow metabolism, one of the most important things you can do is increase your protein intake. Protein isn't just for bodybuilders. It's the foundation of lean muscle, which keeps your metabolism running fast. I recommend aiming for one gram of protein per pound of body weight. And don't forget recovery. Muscle grows when you rest, not just when you train. That means getting seven to nine hours of sleep and allowing enough time for muscle repair so your metabolism keeps running at full speed.

Step five: ditch the quick fixes and stay consistent. The worst thing you can do for your metabolism is constantly jump from one extreme diet to another. Quick fixes, whether it's keto, fasting or fat-burning supplements, aren't sustainable, and they usually slow your metabolism down even more. Instead, focus on a long-term plan that works. Strength train three to four times per week. Eat enough protein to maintain your muscle. Move daily and prioritize your recovery. This isn't about a 30-day challenge. It's about fixing your metabolism for life.

If you've been feeling stuck and like your metabolism has slowed down, I hope this gave you the clarity you need. The secret to getting leaner isn't eating less. It's fueling your body, training smart and staying consistent. If this video helped you, please hit the like button and subscribe for more content like this, and drop a comment below with any questions you have. See you in the next video. Peace out.

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