Improve your cycling technique with Melanie McQuaid’s tips and workout ideas for indoor training on rollers. What’s the difference between training on rollers and a bike trainer? Rollers work on your spinning as you’re required to stay moving at a constant pace in order to maintain stability. This demands more mental focus than riding on a trainer and can make for more efficient sessions than riding outdoors. Rollers also help your pedalling, which McQuaid explains is crucial to becoming a better cyclist.