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.

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.

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