A Stairmaster machine is for cardio and lower body strength/fitness. I use it as part of my cardio days.
It's not much good going slowly and ponderously ffor 40 minutes. For me, the trick is to vary the speed every few minutes, from requiring 2 steps at a time to a slow climb to catch my breath.
It's excellent for hiking fitness. I hate the damn thing, so I try to approach it as a challenge instead of as a chore. I put on a Scott Adams podcast and go for a while. 15-20 minutes.
Cardio days for me entail of mix of elliptical, treadmill HIIT, maybe some rowing, and lastly the Stairmaster to make sure I have no gas left in the tank.
Why the StairMaster Is Still Such an Effective Workout - Sometimes great exercise comes in extra-large, extra-vintage packages