Sleep has two phases: non-rapid eye movement (NREM) and rapid eye movement (REM). It also has four stages that repeat in 4 to 6 cycles nightly. Each stage affects your body differently, from light ...

Females are more immunoreactive than males and, although sex hormones have an important role in immune functions, the X chromosome is fundamental in shaping sex-specific immune responses. X-linked ...

Healthy foods are usually whole foods that provide plenty of nutrients, stay low in saturated fat and sodium, and avoid additives like sweeteners. There are many healthy, delicious foods across fruits ...

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