I have been at this game for a good 7 years now (3 good years) and I've always had a problem with my grip weakness and it kills my workouts sometimes. I do my deadlifts/barbell rows and I have been doing them religiously for about 3 good years and yet no matter how big and strong my forearms and grip feel in the beginning, they wane very quickly on certain days. When I start off with BB-Rows and deads (alternating heavy/medium week to week) by the time I get to pull-ups I am almost no longer capable of holding myself up for pullups and am usually forced to the lat-pulldowns where I struggle to hold onto the bar. By the time I'm at biceps I don't even pick up the heavier weights I am capable of, because even with chalk/straps/etc I am completely unable to hold them. This has been happening to me for a long time and yet it never improves. It's more of an endurance issue I guess? If my grip is good enough to pull 4's in the beginning (don't usually go that high) and then all of a sudden it's too weak to pick up a 50-70 lb dumbbell, then I feel something is wrong...