Crunches are great for toning your abs. Lie on your back, knees bent, hands behind your head, and lift your shoulders using your abs. Repeat 15-20 times for three sets.
Mountain climbers work your entire body, including your abs. Start in a plank position, then bring one knee to your chest, switching legs quickly. Do this for 30-60 seconds, three times.
This exercise tones your sides and improves core strength. Sit with your knees bent, lean back slightly, and twist your torso from side to side. Do three sets of 20 twists.
Squats mainly target your legs but also engage your core. Stand with feet shoulder-width apart, lower into a squat, then return to standing. Do three sets of 15-20 reps.
High knees are great for burning fat. Lift your knees to your chest one at a time at a running pace. Do this for 30-60 seconds, three times.
Lie on your back, hands behind your head, and pedal your legs like a bicycle while touching opposite elbows to knees. Aim for three sets of 15-20 reps.
Lunges tone your lower body and core. Step forward, bending both knees at 90 degrees, then push back to start. Repeat for three sets of 15-20 reps per leg.
V-ups work both upper and lower abs. Lie on your back, lift your arms and legs to form a V, then lower back down. Do three sets of 10-15 reps.
Jump high, bringing your knees to your chest. Land softly and jump again. Do three sets of 10-15 jumps.