So if I hang from my pullup bar and let go of one hand and can only hold myself up for a few seconds, I assume that means my forearm strength stinks, correct?
Forearm = Grip
Finish up your arm workout with three sets of this little number. The Farmers Walk. Wrap a hand towel around each handle of a 50 lb dumbbell. So that they have an oversized handle. Pick them up and walk with them like suitcases until you cant hold them anymore. Take a 30 second breather then do it again. 3 times. That will fix that grip problem.