I have just aquired an exercise bicycle from a friend of mine who was moving that didn't wish to take it with her. When I go to the gym (rarely) I usually use the elliptical machine, but since I have this bike now, I would much rather stay at home and workout. My question is for those of you who ride exercise bikes, is it really just as effective as other machines at weight loss, or will I have to ride at longer intervals to achieve any type of results? For the record, I'm 26 yrs old, 5'6 and weigh 130lbs, trying to get down to 120lbs, or at least stay in that range.