Lie on your back with your knees bent and feet flat on the floor. Lift your hips toward the ceiling, squeezing your glutes and engaging your core. Hold for a few seconds, then lower your hips back down to the ground
Hold a plank position with your forearms on the ground and elbows directly below your shoulders. Keep your body in a straight line from head to heels, engaging your core muscles. Hold for 30 seconds to a minute
Start in a push-up position with your hands directly under your shoulders and body in a straight line. Bring one knee toward your chest, then quickly switch legs, alternating back and forth as if you're running in place
Lie on your back with your hands under your hips for support. Lift your legs a few inches off the ground and alternate crossing one leg over the other in a scissoring motion
Start in a plank position with your hands directly under your shoulders. While keeping your hips stable, tap one hand to the opposite shoulder, then alternate sides
Lie on your back with your hands under your hips for support. Lift your legs a few inches off the ground and alternate kicking them up and down in a fluttering motion
Stand tall with your feet hip-width apart and hands clasped overhead. Slowly lean to one side, keeping your core engaged and hips stable, then return to the starting position and repeat on the other side
Sit on the edge of a chair or bench with your hands gripping the sides for support. Lift your knees toward your chest, engaging your core, then slowly lower them back down. Repeat for the desired number of reps