Quote Originally Posted by SouthernBelle View Post
If you are doing something like Spinervals, they seem to be set up for a road bike workout. I don't know if there are mtn bike dvds or not.
This makes absolutely no sense whatsoever. Do explain....

It's all about gearing, effort, cadence and heartrate. I don't even own a road bike. I put a nice slick on one of my hardtails, and locked out the front fork. This works great with my fluid trainer. The gear ratios are different is all.