I've always been wondering what's wrong with me and pull-ups. I just can't move as soon as my arms are straight. If I start from a position where my arms are bent a little bit, or jump just a little to get myself going, I can do 3 pullups on a good day. But if I straighten my arms fully I can't do even one. Not only that I can't move even the tiniest bit
And I don't seem to get better with practise.
Strange.