If you don’t think you have enough time in a week to exercise, think again. Studies show just 2, 10 minutes workouts or 1, 20 minute workout, most days of week can change your health, mood, productivity, happiness and attitude. Here are some great 5 – 20 minute workouts to add to your current workout regiment. Many require no to little equipment and can be done just about anywhere.
http://www.fitnessmagazine.com/workout/express/?page=1
http://www.healthline.com/health/fitness-exercise/best-workouts-under-20-minutes#13