If you struggle to find the time to exercise then you might be able to fit in more than you think. Researchers have found that just 2.5 minutes of exercise a day can burn as many as 200 calories. The trick is to do just a small amount of high intensity exercise and work the body as hard as possible. Something such as peddling as fast as you can on an exercise bike set at a high resistance for five 30 second periods can burn as many as 200 calories and should be easy for even the busiest of people to fit into their lifestyle. I must admit to being a little sceptical but will try a couple of minutes a day on the exercise bike and see what happens.