Only takes 4 minutes, but its the longest 4 mins of my life: Burns as many calories as a 40-60 minute 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. NO EXCUSES. 4 minute workout? May have to try it soon.
someone said: 30-day ab challenge. I just had to repin this because I've been doing it for only 4 days now (and at only 10 reps instead of 25) and already I'm seeing definition. And I've tried pretty much every Ab workout on pintrest and haven't seen these kind of results.