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AB punching? Anonymous
http://youtube.com/watch?v=wVWfUtutS1M

Theres hammers too in some other videos. I heard that this shit doesn't work lmao. Punching or hitting doesn't work. The fact that you are flexing your abs make them stronger.....
DISCUSS!
>> Anonymous
those are some nice abs.
>> Anonymous
He is wasting his time doing bullshit like that (and looking like an idiot in the process). It's sad to look at people in the youtube comments complimenting such obvious lack of fitness knowledge.

You get good abs from core exercises, and low bodyfat%. Not from hitting yourself in the gut.
>> Anonymous
>>43504
Actually a few studies have shown that physical impact to the abdominals can cause growth. Back around when the "caveman diet and exercise" shit was going on.

I train TKD and we take a lot of hits, and whether its the impact, the tightening, or a combination of both, you toughen up fast or go home.
>> Anonymous
Impacts on a strained muscle could very well cause the same tearing lifting would.