Waking in the middle of the night is common, yet repeatedly opening your eyes between 2 a.m. and 3 a.m. may point to more than a minor disturbance. Eric Berg, a health educator known for discussing nutrition and lifestyle online, has explained that this pattern can reflect deeper imbalances.

He has shared his own long struggle with insomnia, describing how consistent early-morning waking once disrupted his daily life and well-being.

He links this pattern mainly to cortisol, the body’s primary stress hormone. Normally, cortisol is at its lowest between 2 a.m. and 3 a.m., then gradually rises toward morning to promote alertness. In some people, however, it spikes during these hours instead of dipping, abruptly interrupting sleep and causing restlessness.

Possible triggers for this surge include magnesium deficiency, low blood sugar from high carbohydrate intake, excess refined foods, alcohol, heavy late meals, or even low sodium levels. When blood sugar drops overnight, the body may release stress hormones to compensate, pulling a person out of deep sleep.

He also notes that the liver is particularly active between 1 a.m. and 3 a.m., suggesting that nighttime waking can sometimes reflect metabolic strain. Still, persistent sleep disruption should be discussed with a general practitioner, as chronic sleep deprivation is associated with long-term risks such as heart disease, diabetes, and cognitive decline.

For adults over 60, waking around 3 a.m. often relates to natural biological changes. Melatonin production declines with age, weakening the hormonal signal that maintains sleep. Greater sensitivity to light—from street lamps, digital clocks, or phone screens—can further suppress melatonin and make sleep lighter and shorter.

Circadian rhythms also shift with age, leading some people to feel sleepy earlier and complete their sleep cycle sooner. Physical discomfort, medications, bladder sensitivity, early dinners, naps, caffeine, reduced daylight exposure, and even quiet pre-dawn reflection can contribute. Maintaining darkness, limiting screens, staying physically active, moderating diet, and seeking medical advice when needed can help restore healthier sleep patterns.