This machine has absolutely no resistance whatsoever. Have no idea why it is called a "Cardio" Mini Cycle.
As some of the others have mentioned, it is not stable on tile, wood or even carpet. Very hard to actually get a comfortable position to use it. Total waste of money. Particularly as they charge you a 15% restocking fee to return it. Not impressed at all.
For those who want a lower leg workout or arm workout and have trouble with a regular bike Marcy is a popular mini-cycle. Talk to your doctor for permission to use this apparatus. Also do put an exercise mat underneath it.