hey chickies!
i have some ?'s about the stairmill i know a lot of people dislike it but i love it. my question is what muscles is it working. just glutes?? if i spin and use the stair mill will that be overuse of the same muscles. just trying to get some info. i use spinning and running and the stairmill for cardio and i want to make sure my glutes, ab/ad, hamstrings etc are all being worked but not overworked.
please help

