Walk 10 Minutes a Day and Increase Your Fitness Level Old thinking was to work out in a sweat-filled gym for hours a day. No pain, no gain. New studies show that even short bouts of activity can increase your fitness level, especially if you're new at working out. 

Park and Walk
Whenever you have an errand, park your car as far away as you can handle and walk to the store. At the mall, park at the farthest end and walk the length of the mall. Use every opportunity to walk. At the end of the day, it all adds up to better fitness.

Crunch in Bed
Before you even get out of bed in the morning, do 10 stomach crunches while lying flat on your mattress. Increase daily by one until you get up to 100. Think you'll never get there? Try it. You may eventually have to set your clock to wake up 15 minutes earlier, a small price to pay for a flatter stomach.