When the goal is to develop some serious muscle power you need a workout routine that pulls out all stops and spares no expense. For this one you're gonna need more than one chair (remember, we did say no expense), a floor (which you should already have) and ...wait for it. A towel. Yep this is the one where you get to use the towel. (Keep calm. We're only just getting started).
Instructions: Repeat each move with no rest in between until the set is done, rest up to 2 minutes and repeat the whole set again 3, 5 or 7 times depending on your fitness level.
What it works: quads, calves, ankles, chest, shoulders, lower back, triceps, abs, biceps, front hip flexors.
Tip: If there is one workout where you should not quit until you feel the burn it's the one. This one!