What Causes the Entire Body to Feel Stiff in the Morning?
1. Introduction Waking up with the entire body feeling stiff is typically caused by the overnight accumulation of inflammatory fluids in the joints and tissues, a lack of movement during sleep, or underlying conditions like osteoarthritis, rheumatoid arthritis, and fibromyalgia. During sleep, reduced circulation allows inflammatory byproducts to settle, leading to mechanical resistance upon waking. … Read more