@thegravgear: You're doing pull-ups but your back still doesn't feel it. Your biceps are screaming instead. That's not strength holding you back. That's form. Wrong grip. Loose back. Swinging legs. Three mistakes that shift the load away from the muscles you're actually trying to train. Fix them and the right muscles finally start working. Click the bio link to get the link to our calisthenics playbook to learn about tips for pull-ups.