What kind of chin-up bar do you recommend? I've been meaning to buy one, but I wasn't sure if
this type would leave a mark on the door post.
Oh and I have a bad experience with that type of bar, but as usual it can be attributed to my own stupidity. Basically I was swinging myself in it, not realizing this can actually unscrew the damn thing. When I was in a parallel position with the ceiling, at least 5 feet above the floor, it lost its grip and and I came crashing down on my back. My friends thought I had broken my tailbone, I thought I had died, mother of god that hurt.