Originally Posted by philbob57

These are rollers: https://www.amazon.com/dp/B08436T2HW...osi&th=1&psc=1 - the training comes in with going like hell, because you'll fall over if you stop, and in learning to be smooth, because if you're not smooth, you could fall over. A trainer usually has a mechanism to adjust resistance, and a way of holding the bike up for those of us who have too much difficulty with rollers.