I missed one thing in my comments - clothing: I wondered about clothing before I went in. I did not know whether people would be in their actual cycling clothes or just ordinary work out clothes. I wore ordinary yoga pants the first class (not to be too colourful but there was a swamp in my pants after that workout); I wore my cyling shorts the next class and I was much more comfortable. I see some people (men mainly) with big cotton t-shirts and they are soaked when they left. It is worth getting the 'wicking' type of material.

Re the heart monitor - what a drag to lose it on the bike! I saw a woman yesterday attach her heart monitor to her bike. It can be easy to forget. I am looking at the Polars. What type did you have, or will you get in the future, Tulip?