Sleep hygiene guidelines linked to better health and reduced disease risk

Experts highlight that adequate, high‑quality sleep is essential for physical, mental and metabolic recovery. Adults should aim for seven to nine hours per night and keep consistent bedtimes, even on weekends, to support the circadian rhythm. Recommended practices include avoiding caffeine, alcohol and heavy meals before sleep, limiting screen exposure, keeping the bedroom dark, quiet and comfortably cool, and exercising regularly but not immediately before bedtime.

From a biomechanical perspective, proper pillow height and alignment of the head, neck and spine can prevent muscle tension, headaches and chronic neck pain, according to kinesiology professor Álvaro Redondo of the University of Viña del Mar. Using a pillow that maintains natural cervical curvature reduces mechanical stress on muscles and joints, supporting overall sleep quality. Together, these habits strengthen the immune system, lower the risk of hypertension, obesity, type‑2 diabetes and cardiovascular disease, and improve daily concentration and emotional balance.