People always wonder how much sex is enough sex and how long intercourse should last.
There are a whole host of factors which impact our sex lives, or lack thereof, including age, health, sex drive, and lifestyle
Anyhow for a normal couple can follow as below.
Age 18-29 years, one time in 3 days (112 times in year)
Age 30-39 year, one time in 4 days (86 times in a year)
Age 40 -49 year, one time in 5 days (69 times in a year)