Olufemi Idowu (Dr. O) on Instagram: "Nocturnal penile tumescence simply means erections that happen during sleep . Most healthy men get them every night without knowing. It is important to men because they show that blood flow and nerves to the p€nis are working well. That’s why doctors use night erections to understand erectile problems. 👉 Having them is normal 👉 Not having them means something needs to be checked, see a doctor. Don’t forget to share this with all the men you care about #chec