That is a very good question. And my answer is that you shouldn't work your abs out at this age. You need to fully go through puberty first before working on your abs. If you have gone fully through puberty, than work your abs the hell out. Good ab workouts are leg lifts, crunches, sit ups, push up, and side to side ab crunches. But don't just workout your abs, workout your biceps,legs,back,and triceps. If you get veins on your abs and other body muscles,that is very good.
The was 12 or 13 when he got abs
the 11 yr old is a girl or a boy?
16 and 13 yr old daughters and 6 yr old son
yes it is
It depends where you live and the local legislation.
I wouldn't recommend it for a 13 year old.
growth hormones.
Yes. digiromp.com
you don't
no
you cant stop the 13 year old from lying. But you can gain his/her trust.
usually 7th or 8th grade