you may get muscle growth any time from now until about a little before you end puberty. some effects of puberty come out really late in some people
Gaining muscle mass is gaining size, as opposed to strength, in the muscles.
Stretchmarks are caused by gaining weight to fast,pregnancy or obesity.Other known causes are gaining muscle, losing weight to fast and it's believed to be hereditary.I believe that a lot of girls get stretchmarks on their hips and sides while going through puberty because your body is growing and developing in those areas quickly.
People normally do not grow after puberty unless their pituitary gland is out of control, with the exception of gaining muscle mass through exercise (or getting fat from lack of exercise and a poor diet).
Gaining muscle mass is gaining size, as opposed to strength, in the muscles.
No that is impossible. You cannot gain muscle mass without ever gaining weight.
Yes. It means you're gaining weight/you are expanding too quickly for your skin.
If a person is on steroids some things you will notice would be track marks. They may also be aggressive. They will likely be gaining muscle quickly.
You can make your thighs and legs skinner without gaining any muscle by running long distance
There's more than three, but the three biggest I can think of are: 1. Hair growth (facial, body, pubic) 2. Voice breaking (deepening) 3. Growing taller and gaining muscle
Muscle development, increases & definition.
yes
yes.