Treadmills basically serve two purposes :

a) Walking.

b) Running.

No matter, you are running casually or running seriously Treadmill is just perfect equipment for you. The more energy you put in, more speed you get out of it. Treadmills are great assistance for your cardiovascular muscles. It burns around 860-900 calories in an hour as per studies which is an amazing feat for any jogger or weight looser .

Best part is, chances for injuries and extra stress to critical joints is very less in case of TREADMILLS. It works 247 and 12 months a year. No snow, No sun can effect it, it just keeps working:-)

Things to look out in Treadmills before buying it: Treadmill Tips

It all boils down to capacity of your pocket. Treadmills can vary from 1000$ to 3000$ (oops that too costly ..right ) but you have to choose it very wisely because your investment has to last very long. So expect to pay somewhere around 2000$ for buying a quality product. Something less than that means you are loosing on quality in some way. Try to go in for best Treadmills. But before buying, here are some points to be taken care of.

a) For Home use : Go in for DC motors as they are less noisy.

For commercial use, Go in for Ac motors but they are a bit noisy and requires a dedicated line.

Make your treadmill your friend! : Treadmill Guide

a) Initially you might feel uncomfortable while running on treadmill and feel as it is not meant for you. But this feeling generally gets on to many people. Slowly get accustomed to it. After all, it is for your great health.

b) Start by walking on treadmill. Set speed to say, at 5 mph to start off. You can take support from handrails but don't make it a habit. It is supposed to be used only in beginning.