"PHYSICS OF SLEEP" ALTERED BY PILLOW AID...head weight transferred AROUND arm/shoulder, STOPPING SLEEP PAIN * Arm, Shoulder, Neck, pain and snoring relief for side/arm/stomach sleepers * Pain and discomfort relief for arm circulation sleep problems * Pain and discomfort relief for rotator cuff or other shoulder pain * Snoring and neck pain sleep relief...keeps head parallel with shoulders during side sleep