I got my first chin-up bar when I was around about 13 from Argos, it was a door mounted one and cost me around £10. To this day I still use the very same bar. Every time I walk past it I bang out 10 or so. Currently I can do around 25 Pull-ups or Chin-ups in a row.

While browsing the Internet one day I found a tutorial on One-armed Chin-ups on BeastSkills. After reading up I went out and purchased a Captain of Crush #1 and a Dip Belt (By "I went out and purchased" I of course mean "Logged onto Ebay.co.uk and purchased.")

My reasoning behind the Captain of Crush is, that it requires 145lbs of force to close, so if I can close it, I  should technically be able to grip the bar to hold up my body of 135lbs. I still haven't closed it.

My reasoning behind the Dip Belt is quite simply, if I can add extra weight to my chin-ups and pull-ups. I  should get stronger and and eventually be able to pull myself up with one hand. My current one-rep max is a chin-up with 35kg added, the total weight for this chin-up is 100kg.

Chin-up photograph by The U.S. Army on Flickr