According to the Center for Disease Control and Prevention and the 2008 Physical Activity Guidelines for Americans, folks should be getting 150 minutes of physical activity each week, including both cardio and strength-training sessions. Cardiovascular exercise should be at a moderate intensity (no lollygagging), something like brisk walking or easy biking counts. If you really ramp up the intensity, the 150-minute recommendation shrinks to 75 minutes but you’d better be working it (examples include running, swimming laps or playing basketball). Two weekly sessions of resistance training (such as lifting weights or yoga) should work all major muscle groups.
Don’t have a large chunk of time to spare everyday? No need to throw in the towel – you can break it up into smaller increments. Even as little as 10 minutes at a time counts.
It really all comes down to intensity. If you’re a runner, hitting the pavement for 75 minutes a week comes out to 15 minutes per day, over 5 days. Walking 25 minutes each day for 6 days a week will also meet the requirements. As you continue to exercise, you’ll gain strength and endurance – making it easier to work harder. Visit the CDC Website for specific guidelines on increased activity.