Stair stepper is good but nowhere near as good as an actual hill with your pack on. Stadium or bleacher steps are a great compromise. Anything to increase your vo2 max is good. I added more cardio and 45min of stairstepper to my M-F 5x5 weightlifting routine 6 months out from my first hunt. I was ready to conquer any mountain colorado had (so I thought). Going from sea level to 9k feet the altitude kicked my *** the first day!!
Same as M-wig above... I just couldn't catch my breath. Quickly acclimated after day 2 though.
Same as M-wig above... I just couldn't catch my breath. Quickly acclimated after day 2 though.