Warm Up From the Cold Weather  AND Get Your 30 Minutes of Recommended Exercise in by Walking, Marching or Jogging for JUST 10 MINUTES, 3 Times Throughout The Day. Studies show that just 10 minutes a day of moderate aerobic activity such as a brisk walk - or walking briskly in place -  is as effective as 30 minutes of moderate aerobic exercise. Remember, the key to an active and healthy lifestyle is to move THROUGHOUT the day!