Originally Posted by Campag4life

Well I don't ride with slow people unless its a slow friend or family member. One of the fastest guys I have ridden with actually competes on a stationary bike with power meter against other local racers. It is virtual racing...not a spin class. He says his average session is an hour and he averages about 300w's for that hour and therefore he can drop me. :-) This type of riding will make you stronger because it really is a simulation of a very fast group ride or racing. This is a far cry from the average spinning class however geared to the so called 'average' cyclist. As discussed, it depends on the class and the type of bike used. Many don't have power meters and unless you know how many watts are being laid down, it really doesn't mean much.