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H.E.L.P. This position, the Heat Escape Lessening Position, or H.E.L.P., aims to protect some of the areas of your body most prone to heat loss - the head, neck, sides of the chest cavity and the groin area. If you are wearing a life jacket, this position can be very effective.
That are going to to work out the muscles in your body in each area. And make sure you switch it up different every time you work out to avoid getting bored of the same work out. it would also target working out the muscles that you might have missed to pay attention too.