In the first few pull-ups I was very tense, whether coming with me also equal to the door frame down - but no, everything stable, you can really work out any problems. One caveat I have to do: As the rod beats to the long-term test, of course I can not judge. Should it come in the next few months to problems, I would think my review again. Until then, I will, however, rely on the concept and recommend the chin-up bar :-)
