I, too, love the elliptical machine! But sorry ladies, I don't experience any tingling in my toes. My heels hurt sometimes, though. It's still better than any significant time on a treadmill or running... I've always had good running shoes but no matter what shoe I wear I get blisters on my Achilles tendon when I jog.

However, lately I haven't even broken a sweat on the elliptical. Maybe I need to up the intensity? I've been doing half an hour on the elliptical and 15 minutes on the treadmill - long enough to stop my legs from feeling weird from the elliptical but not so long that the jogging bothers my Achilles.