Las year the Academy of Medical Royal Colleges called exercise a "miracle cure". It is hard to think of it in that way when we are bombarded by marketing for the latest drugs and procedures, but none of these compares to the overall benefit of exercise. There are now a multitude of randomized controlled trials showing that exercise can help many medical conditions as well or better than drug therapy.
Unfortunately many people get caught up in the hype of the current trendy exercise fads that promote suffering during exercise. The amount needed to produce large benefits would surprise many people...just getting the heart rate up to 100-140 bpm ( brisk walk or riding a bike at less than 10 mph for most people) 30 minutes a day 5 days a week..
What is keeping you from getting started or continuing with an exercise program?

Closest Thing to a Wonder Drug? Try Exercise