how can i develop my muscles(cadio, biceps,triceps)
by not weight lifting at my age of 12 ? what do i inevitability to do ?

Answers:

I'm 15 yrs old w/ evident facial hair, and haven't started shaving, should I start or resign from it?

diamond push ups, push ups, wide push ups, sit ups, arm rotations, run alot. run 2 miles stop and do 10- 20 of respectively push up and sit up, then run some more.

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