Originally Posted by
StanSeven
It's all in the class and instructor as others have said. I've been to some that are killers. One involved a ten minute simulated climb where every 30 seconds you increased the resistence until you are standing half way through. Then you keep it up until you can't turn the crank anymore. Do that three times!
Don't do that 1, much less 3 times. Unless of course you are genetically engineered to have superhuman leg strength.Don't add so much load that you start slowing down below the 60rpm mark (55 if you cycle outdoors and ride a lot of hills.)
There are some excellent spin instructors out there - you just may have to disregard the crazy ones. And usually you won't be alone - at my gym there's always a group on one side of the room that opts out of the 2-count jump-a-thons.