I think the Switch would be great to use on an exercise bike. Screen resting on the front handles and Joy-Cons by each side completely untethered. If the Switch supports Bluetooth for audio it would be perfect. Wouldn't be able to play anything hugely demanding like that but for easier games it would be a great way to pass the time while you burn some calories. Might even work okay on a treadmill, but that would definitely be harder.
Discussion started at here by metropolis35