Yes! Twenty minutes, once a week is all you need to set into motion the chain reaction in the body to start building stronger muscles. Arthur Jones, the father of High Intensity Training (HIT), once said, “There is no such thing as a long, hard workout”. In other words, the harder the workout the shorter it lasts. Once stimulated, the best thing you can do is to let Mother Nature do it’s thing –You need at minimum 4-5 days and up to two weeks before your body has the chance to adapt metabolically and synthesize stronger muscles.