Best practical, and prevalent, indoor cardio machine IMO would be an Airdyne. Simple, easy, and common in most gyms.
Whichever one gets you doing it!!
so its like a football sled with no pads? interesting.
Comic Sans makes me feel gangsta
I prefer high incline treadmill, stair machine, or a pool. I also like to vary my forms of cardio. Once it warms up, HIIT outside.
I prefer to do my cardio with a jumprope. It's a killer workout.
your legs....pick your poisen
second the jump rope
Stairmaster is excellent.
I love the elliptical too but only at highest intensity, like others said, it's a waste of time at low resistance levels.
If you can find one, the versaclimber is killer!