around 12 years old
When he was 14
because you are.
no. my son is 11 and has been lifting for a month.
Lifting weights is an exercise
anyone of any age would get "stronger" by lifting weights in greater succesion.
you grab some weights and start using them
yes it is
The quickest way to build muscle is to start lifting weights. Start off with lighter weights until you can lift them easier and start increasing the weights.
Start lifting with what you are comfortable with and then gradually start adding weight. Ex. start lifting 5lb, next week (or every other week) make it a 10lb weight
No. Lifting weights is an excellent exercise and unless done to excess will not be harmful.