Stand with your back flat against a wall, feet about 6 inches away from the base.
Press your lower back, upper back, and head against the wall.
Raise your arms to a "goal post" position: elbows bent 90 degrees, upper arms parallel to floor, backs of hands against wall.
Slowly slide your arms up the wall, straightening your elbows while keeping your wrists, elbows, and shoulders in contact with the wall.
Extend as high as you can while maintaining contact with the wall.
Slowly slide back down to the starting goal post position.
Focus on keeping your core engaged and lower back pressed against the wall throughout.
Repeat for desired repetitions.