Climbing is a particularly effective warm-up for loosening shoulders and the lower back area before your regular training routine.
Set the Treadwall to auto-stop and climb very slowly for three minutes at a full positive angle.
Use hand holds that are widely spaced and easy while using high steps and crossing moves to warm your lower body. Allow your legs to do the work.
Next, set a neutral angle and climb for two minutes while focusing on long arm movements and slow reaches. Throw in an occasional static stretch and a wide range of motion to work your back and shoulders.
Lastly, climb for one minute at an overhanging angle and push in your hips and twist your torso to warm up your lower back and core muscles to avoid excess arm fatigue.