He shouldn't even try. There are two things you need to get a six pack, whopping great muscles and almost on subcutaneous(under the skin) fat. Just about every one who are ready to do a ridiculous amount of situps and crunches every day can get the muscles, but shedding body fat to the point where abs becomes clearly visible isn't healthy, particularly not for one who's still growing. Your body should have a certain amount of body fat, it's your insulation, your padding and your energy reserve. Getting rid of that will lower your energy levels and make you more prone to getting sick. Spend that effort on being nice and attentive to the person you like instead. I promise it'll pay off better.
No.
can a 13 year old boy work at red cross
No.
A 13-year-old boy absolutely CAN impregnate a girl. Use condoms!
Go to home depot. Get some paint. Abs in 10 minutes.
it depends, if the boy is 13 maybe, if the boy is nine he cant have jizz yet
no it is imposible
Well I a 13 year old girl with abs. I have had them since I was around 3. I am a gymnast,cheerleader,swimmer and diver. I started doing aerobics yoga and muscle workouts from when I was 5.
yes
Do it
Just about every country in the entire history of the world has had at least one 13-year-old boy in it.
As tall as any other Caucasian 13-year old boy in the world.