I walk almost every day out side but this is a real hard workout for me, I am 77 years old and that might be why it is a bit rough to do it very long

I'm an average strength woman and only one part was a bit tricky (tip, use the foam blocks that come in the box to lift up the belt and screw it into the base)

Incline options are a bit steeper than expected, but not bad

It does wobble a bit but not the point to flip over or me falling down

Sometimes it hangs a little bit but not enough to matter