29.5 for 20 minutes seems really low. i burn about 100 calories doing brisk walking for 30 minutes on a treadmill. i've never used an eclipse or any type of elliptical trainer so i'm not sure how many calories they burn. i am moving into a new house soon that will have a little bit more room. i'm considering buying a type of exercise equipment but i haven't decided what yet. winter will be here before i know it and there will go my evening walks...