Stand with your feet hip-width apart, chest lifted, and core pulled toward your spine. Hold a light resistance band or rolled-up towel in both hands, one hand at each end. Pull the band taut so your arms are fully extended, resting outside of your thighs.
Slowly raise both arms to lift the band all the way over your head and down to your lower back, or as close as you can get. Keep your chest lifted and core braced as you move.
Lift the band back overhead, rolling your shoulders forward as you return to the starting position.
This counts as one rep. Repeat for one set of 10 reps.