High-intensity interval training is a must if you want to see results fast. These short, intense bursts of activity burn fat like nothing else by revving up your metabolism and increasing your strength.

Targets: shoulders, chest, core, quads, hamstrings, glutes
How to: Begin standing with your feet hip-width apart. Lower your hands to the ground so that your palms are directly below your shoulders and jump back into a plank position. Engage your core as you hop both legs out to the side, then immediately back together. Jump your feet back by your hands so that you’re in a crouching position. As you stand up, jump into the air and land softly on your feet. Complete 15 reps.

Targets: glutes and quads.
How to: Stand with your feet hip-width apart, weights resting on your shoulders and held in place by each hand. Engage your core as you bend at the knees and lower down into a squat. Make sure your knees don’t go past your toes. When your thighs are parallel to the ground, raise back up to start. Complete 25 reps.
Hate squats? Here are 15 ways to work your booty without lunges or squats:

Targets: lower abs and hip flexors
How to: Begin in a v-sit position with your legs a few inches off the ground and your arms in front of you. Raise your right leg uptoward your hands and grab your leg by the calf. Slowly lower your leg back down and raise your left leg up. Complete 15 reps on each side, 30 reps total.
(Want more high-intensity workouts? Dance your way fit with High-Intensity Dance Cardio, the first-ever socanomics DVD!)

Targets: glutes and hamstrings
How to: Lie on your back with your legs bent and feet on a yoga block. (You can also use a book or the bottom step of a staircase too.) Use your booty to lift your hips up into the air. Slowly lower back down. Complete 25 reps.

Targets: core
How to: Lie on the right side of your booty and lift your legs a few inches off the ground with your right forearm holding your upper body up and left arm up by your head. Crunch your knees toward your left elbow. Lower back to start. Complete 15 reps, then switch sides.
Source: The Tone It Up Girls Created This Full-Body Cardio Routine Just For You
