Today was my 75 minute spin-yoga class, and I'm still here, mostly. I walked in I saw a dozen women from 30-50 years old, with water bottles, towels, and some with special bicycling shoes and heart-rate monitors. My first thought:"I'm screwed." Sure enough, they pedaled me into the ground. After about ten minutes, the instructor looked at me, got out her cell phone, and punched "911" into the speed dial--just in case. Okay, not quite that bad, but she did look concerned for the token male. I tried to explain that profuse sweating and shaking legs was normal for me, but I don't know if they bought it.