Lie on your back with your arms extended straight up toward the ceiling
Bend your hips and knees to 90 degrees so your shins are parallel to the floor
Press your lower back gently into the floor
Brace your core
Slowly extend your right arm overhead and your left leg straight out
Keep your lower back from arching
Return to the starting position
Repeat on the opposite side
Continue alternating sides in a controlled motion
Keep your movements slow and steady
Breathe continuously throughout the exercise