Why no morning wood happens and what it reveals about your vascular health
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 01, 2025 · 14 min read
Morning wood can be a useful window into your testosterone, blood vessels, nerves, and sleep. Here is what it actually means when you wake up hard – or stop noticing it. “Morning erections are one of the simplest, real‑world checks of a man’s sexual health. They reflect testosterone, blood flow, nerves, and sleep quality all ...