How much space do I need? You will need a six-foot by six-foot space for most of the workouts. Related articles How long will I have access to my workouts? What equipment do I need? Is this program safe for someone with bad knees? Is this a high-impact program? How many workouts are there? How long is each of the workouts? Do I have to start Full Body Fit on a Monday or can I start any day of the week?