Sounds like a lot of people have issues. I do all the standing on one foot stuff and generally feel fine on the bike. I occasionally ride no hands just to stretch out. I also go fast downhill on straightaways although I slow on curves to reduce the risk of falls (I broke my hip in a crash and don't want to repeat that experience). It's tight cornering that gets me. So far only enough to warrant attention. I will report back in 10 years.