how do treadmills affect your body?

United States
January 5, 2007 8:29pm CST
do treadmills help you lose weight? do they help tighten stomach muscles and upper leg muscles? do you use a treadmill and how has it helped or hurt you? i'm considering going to the gym and get on a treadmill to help me lose a few pounds and i want a tighter tummy and tighter butt and upper legs i was wondering if using a treadmill will help those areas?