Neck and Upper-Back Stretch: Seated Hand Behind Head
Sit comfortably in a chair or on the floor.
Clasp your hands, and bring both palms to the back of your head. Sitting with a tall spine, ground your hips firmly into your seat.
From here, begin to gently press your hands down toward your thighs, tucking your chin into your chest. As you press down, use your palms to pull your head away from your shoulders. This will intensify the stretch even more.