Any type of exercise (even cardio) will build some muscle. So at the start, you might build muscle before reducing your body fat. In this case, your legs might look bigger at the start, but eventually, your body fat will decrease and your legs will get smaller.
A new exercise regimen puts stress on your muscle fibers. This causes small micro tears, also known as micro trauma, and some inflammation. Those two conditions in your muscle fibers are the reason you may gain some weight.
Gaining weight after working out is likely due to muscle fiber inflammation, muscle glycogen and water weight gain, and over time, muscle mass gain. If weight loss is your goal, seeing an increase on the scale when you've been making an effort to exercise can be frustrating.
Most beginners will see noticeable muscle growth within eight weeks, while more experienced lifters will see changes in three to four weeks. Most individuals gain one to two pounds of lean muscle per month with the right strength training and nutrition plan.
When you gain muscle, you'll notice that your muscles naturally look more defined and are more visible, Berkow said. (To see your abs specifically, you'd have to also lose fat.) Your muscles would also be larger in size or feel "harder." If you gain fat, you'll notice more softness, she said, and you'll gain inches.
Some research suggests that you can start to lose muscle in as quickly as one week of inactivity - as much as 2 pounds if you are fully immobilized (3). And another study suggests your muscle size can decrease by about 11% after ten days without exercise, even when you aren't bed ridden (4).
You're gaining muscle. The scale might be stuck because you're building up your biceps and glutes—and that's a good thing. The number on the scale is less important than the breakdown of how much water, muscle, and fat are in your body, Jovanovic says.
Muscle fitness – expect to see small changes in the first few weeks. Within three to six months, an individual can see a 25 to 100% improvement in their muscular fitness – provided a regular resistance program is followed.
It depends on your body fat percentage (which most gym trainers will measure for free). If you're living with obesity (over 25% body fat for a man or more than 32% body fat for a woman), aim to lose fat first. The higher your body fat percentage, the harder it is to gain muscle while minimizing fat gain.
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.
You've Gained Muscle Mass
If you're exercising regularly and doing a mix of cardio and strength training, it's very likely your body composition (ratio of muscle to fat) is changing for the better. If you're gaining muscle while losing fat, the scale may not show any weight change.
When you aren't working out regularly, your body composition starts to change. With little physical activity, muscle cells will shrink. With less calorie burn, fat cells will start to expand, making the body look softer.
One of the main reasons that undereating can lead to weight gain is because consuming too few calories can cause your resting metabolic rate to slow down. This means you may burn fewer calories throughout the day.
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.
Because average weight loss is approximately 1 kilogram per week, you can expect to safely lose 10 kilograms — which, at a conversion rate of 2.2 pounds per kilogram, equals 22 pounds — in about 10 weeks.
The rule of thumb, Fernstrom says, is that losing 8 to 10 pounds translates to going down one size. Still, if you lose "up to 15 pounds, you may be OK in your old size," she says.
How much weight do i need to lose to drop pants size? On average, every 10 lbs of weight a person loses will equate to 1 pant size smaller. So, for example, if someone lost 25 pounds, they would likely drop 2 and a half sizes in pants.
How quickly will you lose weight? The volunteers reduced their waist sizes by an average of 1 inch for every 4lb (1.81kg) they lost. So if you lose 1lb (0.45kg) a week you could hope to reduce your waistline by an inch after four weeks.