Tumescent male health is an integral part of the human sexual response.

The study looked at nocturnal penile tumescence (NPT). And the degree of sleep erections in 40 healthy, sexually nondysfunctional males aged 23 to 73. They were evaluated over three nights under comparable conditions. Including systematic awakenings during tumescent episodes on the third night. The ratio of total sleep time to time in bed (sleep efficiency) and total sleep time dropped dramatically with age.

After age 30, the duration of REM sleep. Did not differ significantly after adjusting for differences in sleep time. The frequency and duration of NPT, but not the degree of circumferential increase during tumescent episodes, decreased with age, regardless of sleep changes.

Unlike males in lower age groups, the majority of men over the age of 60 did not develop full sleep erections. Read more in our article.