A fitness boot camp is type of indoor/outdoor group exercise class that mixes traditional calisthenic and body weight exercises with interval training and strength training. While there are a variety of styles of fitness boot camps, most are designed in a way that pushes the participants harder than they'd push themselves and, in that way, resemble a military boot camp.
Rest is at important as the workout itself. Your muscles and body require nutrients to repair and regenerate damaged tissues from working out. Furthermore, your immune system can be either bolstered or damaged by what you choose to eat.