I bought a couple of these for here & parents house.
I'm a para so i have it on desk & crank for upper body & wow it hits every muscle better then anything including weights.
Also have the ergo handles on 1 which are worth it for hand cranking.
Confess it's been collecting dust past couple years cause life got busy.
Kitty- great move getting to "move"! Exercise improves entire body.

Amazon.com : MagneTrainer-ER Mini Exercise Bike Arm and Leg Exerciser : Sports & Outdoors