walking down the road; you can do all sorts of exercises on a treadmill, which makes it a very versatile piece of machinery.
the treadmill is designed, obviously, for walking. you can also run and jog on it. you have the added benefit of being able to do your walking exercises when it is raining outside. you can also control how far you want to go and how fast or as steep as you would like.
starting to workout on a treadmill is not an easy task and it does take time to get used to how they work and how your body tries to interpret the treadmill. trying to catch up 