Stand with feet apart, step forward and bend at knees, jump and switch legs in the air and land with opposite leg forward. Do as many reps in 60 seconds, rest, repeat 3 times.
Stand with legs shoulder-width apart, squatting as if sitting in a chair. Keep head up, chest out, and shoulders back. Jump high and rebound quickly.
Plank engages core muscles, and improves stability. Get in a push-up position, forearms on the ground and keep your body straight. Hold your body and keep increasing time gradually.
Stand with arms by sides. Step forward with right leg into a lunge, both knees at 90 degrees. Stand back up, legs together. Repeat with left leg for 15 reps.
Leg raises strengthen lower abs. Lie on your back, extend your legs straight, lift to a 90-degree angle, lower without touching the floor and raise again. Repeat for desired reps.