Less lounging. More lunging. Kids can improve their balance and strengthen their legs with some lunges. Just step forward with one leg, and lower your hips until both knees are bent at about 90-degree angles. Keep the weight in your heels, and push back to your starting position.

Make sure your knee doesn’t go past your toes during this exercise. You can do these for 20 seconds or until you get tired.

Adults need 30 minutes of physical activity every day. Kids need 60.