Good luck, you know what you need to do now. BTW, do they have a cross-country skiing machine (eg a nordik track) at your gym. Those machines don't put much stress on your knees.
Not to my knowledge. They have elipticals, two types of stairmasters, a summit trainer (basically an uphill eliptical - it's hell on the knees), rowing machines, two types of stationary bikes, and treadmills in the cardio room.
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