Today we are going to talk about HIIT workout for upper body. If you want to develop your upper body and strengthen your muscles while burning fat, but you want to avoid marathon gym sessions, the 'High-Intensity Interval Training (HIIT)' is the ideal workout for you.
Running is the best example of fat-burning functional exercise know to man. For those who find it difficult to run regularly, metabolic resistance training can also give the cardio system a good workout and develop muscles at the same time