The ultimate way to work both your abs and butt isn't with super-targeted, muscle-specific moves—it's in dynamic movements that engage your whole body. That way, you burn tons of calories while also firming the areas where you want it most. Celebrity trainer Jaime McFaden has a quickie "butt and gut" routine that puts all 360 degrees of your core to work and recruits every single muscle in your hips and butt. The workout is only 20 minutes long and requires no equipment—so you have no excuse not to get sweating. (Have even more time and want extra booty burn? Add McFaden's bodyweight butt workout after this circuit, before the cool-down.)
You'll warm up with some easy mobility moves and dynamic stretches, then go into the circuit-style workout. Do as many reps as possible (AMRAP) of each move (with good form) for 30 seconds. You'll repeat the circuit again, then cool down with some yoga poses and static stretching. (Warning: Don't skip the cool-down, even if you're short on time. Those stretches are important for both your mind and body.)
Want more? Get the entire series of videos that will help you get back at it with Tone & Trim Your Body, at-home classes by Jaime McFaden on Grokker. Shape readers get 30 percent off with promo code SHAPE9, so you can start fine-toning your body today.