J Petersen: I was probably in my late thirties the last time I did a one arm pull-up. I'll be 66 soon so it's been awhile. I didn't decide to stop doing them, I just got busy in my career trying to make a living and pay the mortgage on my house. I've read that to maintain a level of strength you need to exert at least 80% of your max at least once a week. For one arm chins that probably means you need to do a weighted two arm with at least 50% bodyweight added once a week. Consistently. You need opportunity, it's surprising in day to day life and in the work place how few opportunities there are to do pull ups. Now, at home seeing I'm working on it again, I have a pull up bar in my office doorway, I have a 2" bar in my workshop for pull-ups, a climbing rope, and a rock climb trainer over the door. I'm thinking of rigging a pulley apparatus to practice one arms. I'm not even close now, but I'm decades older and 10-15 lbs heavier. I am losing the weight gradually, S&S is helping. I'm down to 154 or so, down from around 165. I was at around 145 when I could do them. I hope to get one again, you can be sure I'll post a video here if it ever happens. I've never known personally another person who could do one. It was lonely, I think people thought it was a circus trick. It's very gratifying and motivating finding like minded people on the internet. Most of the people at work think I'm a little crazy talking about pull-ups and kettlebells and stuff. Oh well. More power to you, I think you'll be okay if you just hit 80% of your max once a week and test your max every month or two. I think Aris could add some insight to the maintenance part if he reads this.