i am on the 12 week mass program. when doing dumbell presses for chest(only on the set i did 12 reps) i experienced an incredible burning in my forearms. i got the twelve but i felt i couldnt do anymore because of my forearms. is this normal? it didnt happen on the sets with lower reps.
I had the same feeling when I first started lifting heavy weights. Loosening your grip will help a lot. I also needed to do wrist curls to build up my strength in the forearms and help condition them for stamina.