Everybody wants to get fit at some time in their lives. Whether it’s an abiding passion from their teenage years or a sudden resolution upon turning fifty, people everywhere are susceptible to sudden violent desires to get fit. Some go to the gym, others take up running, while some decide to start an at-home workout such as Power 90 or P90X. If so, the question rapidly becomes: which is the right workout for you? Should you start slow and pace yourself, or go extreme straight away?