go running, do many sports that make you work hard, go to the gym, have a healthy diet. Lift weights, but don't go overboard as weights that are really heavy may stunt your growth if you're still growing.
excerice
no
The lower the weights, the stronger and leaner your muscles will become with more repetitions. If you want bigger muscles, you should try heavier weights.
Yes, during puberty your muscles will (in general) get bigger and develop.
The gymnast have more muscles but the foot ball player has bigger muscles.
i don no
Lift weights with them
bigger muscles
milk
poseidon
When you look in the mirror the reflection makes it look bigger cause of the angle you are looking at the muscles
contacting and retracting. actually they are also breaking slightly when you exercise, that way, when they heal the heal bigger and better. (hence, bigger muscles)