Lie on your back with your arms straight up toward the ceiling and your knees bent at 90 degrees
Press your lower back gently into the floor
Brace your core
Slowly lower one arm overhead and the opposite leg toward the floor
Keep your lower back from arching
Lower only as far as you can control
Return to the starting position
Repeat on the other side
Alternate sides for the desired number of reps
Keep movements slow and controlled
Breathe steadily throughout the exercise