Quote:
Originally Posted by PK6o4*
but i felt my biceps tingle as i squeezed them  , also what are the benefits of working your hamstrings? |
'tingling' doesn't = growth. You could beat your biceps with a baseball bat, and they will be sore, swollen, and tingly for a week. But that doesn't mean you made them bigger or stronger.
Your hamstrings are part of your entire back, starting from shoulders, lats, lower back, butt, hamstrings, calves, etc. Notice something about all these muscles? They are your biggest ones. Make them strong, and you will be strong overall. And then big.
Like Halo's sig used to say: BUILT FROM THE BACK.