Flutter Kicks To begin, lie flat on your back. Place your hands at your side, or under your butt for extra support, and lift your legs about two inches from the ground. Keep your legs straight and toes pointed, and then quickly flutter your legs about two inches up and down without touching the ground. Do 3 sets of 15 to 20 reps. Squats Stand tall with your feet hip-width apart. Tightening your stomach muscles, begin to bend at the knees and continue to lower your body until you reach a sitting position. Remember to keep your back straight. If you’d like to add extra resistance, do weighted squats using a barbell or a dumbbell. Do 3 to 5 sets of 8 to 12 reps. Planks With your feet pressed into the ground, raise yourself onto your elbows. Be careful not to stick your butt out or arch your back inwards. You want your body to form a straight line from your ankles to shoulders. Pull your belly button in towards your spine to fully engage your core. Hold for 1 to 2 minutes. Jumping Rope To work your calf muscles, reflexes, and core while increasing cardiovascular endurance, alternate 45 seconds of jump rope with 15 seconds rest. Repeat 3 to 5 times. Hip Bridges Lie on your back with your arms at your sides, keeping the soles of your feet and your shoulders on the floor. Lift your trunk until your spine is straight, hold for 5 breaths, then slowly descend to work your abdominals. Do 3 sets of 8-12 reps. Lateral Pillar Bridge Lie on your right side, keeping your body in a straight line, with your feet stacked and your elbow under your shoulder. Thrust your hip up off the floor to make a straight line from shoulder to ankle. Hold for a few seconds. Perform 10 reps. Repeat on your left side. Be sure to keep your head and spine aligned.