Heavy Weight, Lots of Sets, and Low Reps.
No that is impossible. You cannot gain muscle mass without ever gaining weight.
With a little intelligent bodybuilding training, you can build muscle mass and gain weight fast.
Yes. Muscle is more dense than fat. As you gain muscle mass, you do gain weight.
It is possible. If you are preforming a slow diet plan, you can gain some muscle mass. The only why to gain mass on a regular basis is to increase your calories. Yet weight training will help preserve muscle and could even slowly add some mass.
Answer: Your frame size will become larger so you will gain weight, but not from muscle mass. You can gain muscle mass from exercise.
Cause you get stronger and thatputs on weight
You don't gain weight in order to get muscle. You overload your muscles with heavy weight training, and then eat more to fuel the muscle growth.
The most effective exercises for weight gain are strength training exercises that target multiple muscle groups, such as squats, deadlifts, bench presses, and rows. These exercises help build muscle mass, which can contribute to weight gain. Additionally, consuming a calorie surplus and eating a balanced diet rich in protein is important for gaining weight effectively.
Weight training.
You probably have a very high metabolism which makes it hard to gain weight. I would slowly start to rasie your calories are start a weight training program. Make sure you are eating quality foods, and not just going out to fast food everyday to gain.
With disuse, lean muscle mass will decrease. This results in a lower metabolic weight, which can translate into fat gain. Except for illness or injury, there's no reason ever to stop strength training--even into your 90's. Make it a lifelong habit if you can. .
It may cause a gain in lean muscle mass