Morning erections, commonly referred to as 'morning wood,' serve as an indicator of men's health, particularly testosterone levels. According to Dr. Jeff Foster, a medical director of men's health, men in their teenage years and 20s should experience morning erections daily. This frequency decreases to more than 50% in their 30s, and by the 40s and 50s, men can expect them two to three times a week. In their 60s, the occurrence may drop to once or twice weekly. Dr. Foster emphasizes that a significant decline in morning erections could signal health concerns, including low testosterone or increased cardiovascular risk. He advises men to monitor their testosterone levels starting at age 30, as low levels can affect metabolism and mental health. Morning erections are a natural response during REM sleep, influenced by the body's parasympathetic nervous system. While generally a sign of good health, men should consult a doctor if they notice a complete absence of morning erections, as it may relate to circulatory issues or erectile dysfunction.