Why am I gaining weight when I've been working out?

Author: Benjamin Hermiston  |  Last update: Wednesday, September 17, 2025

Increased muscle mass It sounds bad, but it's actually a good thing. After your workout, your body works to repair these tears, allowing your muscles to get bigger and stronger. So even though you may be losing fat, you're gaining muscle. You might feel slimmer, even as the number on the scale rises.

Why am I gaining weight even after working out?

Water Retention: Intense workouts can cause the body to retain water, especially when starting a new exercise regimen. This can result in temporary weight gain. Increased Appetite: Regular exercise can increase appetite, and some individuals may consume more calories than they burn, leading to weight gain.

Do you gain weight before losing it?

Yes, it's common to experience temporary weight gain before starting to lose weight, especially when beginning a new exercise or diet routine. This can be due to factors like water retention, muscle gain, or changes in eating habits.

Why am I gaining fat when I'm eating less and working out?

In summary, weight gain despite consuming very little food may be caused by a slow metabolism, hormonal imbalances, medications, fluid retention, muscle gain, stress, or underestimating calorie intake.

Why have I gained 10 pounds since working out?

Muscle is denser (meaning a lot less fluffy) than fat, says Dr. Calabrese. Put another way, 10 pounds of muscle takes up a lot less space than 10 pounds of fat. So, as you start working out regularly and building strength, the new muscle you build may eventually weigh more than the fat you've burnt off.

Why am I gaining weight with more exercise?

How to flush out water weight?

  1. Exercise Regularly. Daily exercise provides several health benefits, including preventing water retention. ...
  2. Drink More Water. Drinking water to reduce water weight sounds counterintuitive, but it helps. ...
  3. Manage Salt Intake. ...
  4. Cut Carbs. ...
  5. Focus on Certain Foods and Herbs. ...
  6. Try Supplements. ...
  7. Up Your Caffeine Intake.

Why is my body fat increasing with exercise?

Working out can cause short-term weight gain as your muscle mass increases. Post-workout inflammation may cause temporary weight fluctuations. Workout plateaus, supplement use, and dietary changes can also stall your weight-loss efforts. Try not to obsess over the number on the scale.

What is the 30/30/30 rule for weight loss?

The 30/30/30 is a weight loss method that involves eating 30 g of protein within the first 30 minutes of your day and following it with 30 minutes of light exercise. This morning routine is rooted in sound science, and it could be a good way to increase your capacity to burn fat while keeping lean muscle.

How long does temporary weight gain after exercise last?

Especially in the first days and weeks of a new workout routine, your body is going to retain water. In most cases, it goes down within a few days. Some reasons your body retains water are: Inflammation - As you stress the body and break down the muscle, your body holds onto water to help with the repairs.

How long does it take to start losing weight when exercising?

Stage 1: Fast weight loss

In the beginning, weight loss happens pretty rapidly. Over a period of 4-6 weeks, you'll likely see a noticeable difference in your body weight [1] — either on the scales or by the way your clothes fit.

Which body part loses fat first?

Mostly, losing weight is an internal process. You will first lose hard fat that surrounds your organs like liver, kidneys and then you will start to lose soft fat like waistline and thigh fat. The fat loss from around the organs makes you leaner and stronger.

Is it normal to gain weight when you first start working out?

Your Body Is Holding On to Water Weight

“Glycogen can rapidly provide energy — in the form of glucose — when needed,” says Dr. McGowan. But because glycogen binds with water to fuel muscles, that water can increase your weight slightly in the initial weeks of a new workout routine.

How long does it take to see results from working out as a female?

For beginners, you can expect to see initial changes in strength and endurance within 4-8 weeks of consistent participation in fitness classes. These initial gains can be highly motivating, improving your physical strength and cardiovascular endurance and providing a solid foundation for future progress.

How long does water weight last?

How Long Does Water Weight Last? The span can vary depending on the cause. Temporary water weight caused by high sodium intake or premenstrual syndrome can last a few days to a week. Permanent water weight caused by underlying health conditions may last longer and require medical treatment.

What is the fastest way to lose 30 pounds?

To lose 30 lbs at a healthy pace of 1 to 2 lbs per week, you must either reduce your calorie intake or increase your energy expenditure to generate a calorie deficit. This amounts to a 500-calorie loss for 1 lb and a 1,000-calorie deficit for 2 lbs.

What is 30g protein 30 minutes waking up?

There are just three steps to it: Eat 30 grams of protein at breakfast. Eat breakfast within 30 minutes of waking up. After breakfast, get 30 minutes of low-intensity, steady-state exercise.

What is the 80 20 rule to lose weight?

Just try to think of your meals in terms of balance. 80% healthy, whole foods, and 20% for fun, less-nutritious treats. The key is consistency over time, not perfection at every meal. So, if one day you have a pizza, no big deal—just aim to get back on track with your next meal.

Why am I chubby even though I exercise?

You're eating the wrong things

Research has shown that diet has a greater impact on weight loss than exercise. Be sure to eat enough fruits, vegetables and healthy protein, and try to avoid ultraprocessed foods or items with added sugar.

How long does it take to see results from working out 5 days a week?

As a rough guide, you'll probably notice some initial changes in the first four to six weeks, but longer-term changes (what you're working toward) will often take around eight to 12 weeks. The good news is that you're likely to start feeling better quickly.

Will I gain weight if I sleep after exercise in the morning?

If you're wondering about weight gain from sleeping post-exercise, rest assured that sleep is a crucial part of recovery and does not directly lead to weight gain. Getting adequate sleep is essential to a healthy lifestyle and can contribute to overall well-being, including weight management.

What kills water weight?

Water weight is not usually a cause for concern, but it can be uncomfortable and recurring. Reducing salt and carbohydrate intake, keeping hydrated, and frequently exercising are all good ways to lose water weight and prevent it from returning.

How to lose belly fat fast?

8 Ways to Lose Belly Fat and Live a Healthier Life
  1. Try curbing carbs instead of fats. ...
  2. Think eating plan, not diet. ...
  3. Keep moving. ...
  4. Lift weights. ...
  5. Become a label reader. ...
  6. Move away from processed foods. ...
  7. Focus on the way your clothes fit more than reading a scale. ...
  8. Hang out with health-focused friends.

Why is my weight stuck even after exercise and diet?

So as you lose weight, your metabolism declines, causing you to burn fewer calories than you did at your heavier weight. Your slower metabolism will slow your weight loss, even if you eat the same number of calories that helped you lose weight. When the calories you burn equal the calories you eat, you reach a plateau.

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