Did You Know!
Some Muscles Never Get a “Full” Rest — Even When You’re Asleep
While most skeletal muscles relax during sleep, certain muscles remain partially active 24/7. Postural muscles in your neck, back, and core continue working to keep your airway open, stabilize your spine, and maintain breathing mechanics — even during deep sleep.
This is one reason chronic stress, poor posture, or an unsupportive mattress can lead to morning stiffness or soreness without any obvious injury.