How long does sex normally last?

How long does sex actually last?

According to the landmark Waldinger stopwatch study (2005) where 500 couples timed intercourse with a literal stopwatch, the median duration is 5.4 minutes. A survey of sex therapists defined "desirable" as 7–13 minutes — much shorter than most people assume.

Clinical data on intercourse duration (Waldinger et al.)

• Too short: 1–2 minutes (therapists' consensus)
• Adequate: 3–7 minutes
• Desirable: 7–13 minutes
• Too long: 13+ minutes (associated with discomfort)

Why porn distorts expectations

• Average porn scene lasts 20–40 minutes — 4-7x longer than real sex
• Self-reported duration averages 12+ minutes — nearly double the actual stopwatch data
• Most of a satisfying sexual encounter is foreplay, not intercourse
• Duration does not correlate with female satisfaction — arousal and foreplay do

Sources: Waldinger et al. (2005) JSMT, Corty & Guardiani (2008) JSMT, Journal of Sexual Medicine.