This is really a great tip! I’m still not able to do a pull-up without help from my personal trainer but I CAN hang on still for a 30 – 60 seconds. It depends how tired my arms are. This is a sure way to improve your upper-body strength. My goal is to raise myself above the bar!
Another great way to improve your upper strenght is to do a HALF PULL-UPS. Stand on a box that’s high enough to grab the bar. Your arms should be bent about 45 degrees. Pull yourself up then lower to starting position. Aim to pull yourself up towards the bar as far as you possible can.