Only takes 4 minutes, but its the longest 4 mins of my life: Burns as many calories as a min run. Makes your body adapt and improve very quickly. Increases metabolism for up to the next 36 hrs. Takes only FOUR minutes, Developed by a Japanese Scientist.
Have 30 minutes to workout? Try this: 30 exercises for 30 seconds each, resting 30 seconds in between. Print it out, and take it to the park! Just grab a set of dumbbells or resistance bands. harder-better-faster-stronger-healthier-health-fit work-it-out