Lay on your back with your arms raised. Hold your legs up and knees bent 90 degrees. Stretch your right arm behind you and your left leg in front, keeping both off the floor. Return to the start and switch sides (left arm, right leg). Rest your lower back on the ground during the exercise.
Start a pushup on your forearms. Line up your body from head to heels. Hold with a tight core and no hip movement.
Lay on your back with your legs extended and arms at your sides, palms down. Lift your legs straight to 90 degrees with your core engaged. Slowly lower them without touching the ground.
Position yourself on your back with hands behind your head, elbows out, legs elevated, and knees bent 90 degrees. Bring your right elbow to your left knee and straighten your right leg. Flip your left elbow to your right knee and stretch your left leg.
On your back, raise your legs and arms to the ceiling. Curl up and touch your toes with your fingertips. Drop back down and repeat, raising with your core to avoid neck strain.
First, sit on the floor with your legs in front of you and arms at your sides. Point your fingers toward your feet with your palms behind you. Lift your hips off the ground and press through your hands and heels to form a straight line from head to heels.