Adequate length for Sex

A new survey aims to set the record straight about how long heterosexual intercourse should last.
The verdict: 3 to 13 minutes, with 3-7 minutes deemed "acceptable" and 7 to 13 minutes dubbed "desirable."
Thirty-four sex therapists in the U.S. and Canada completed the survey. They had 26 years of clinical experience, on average; 45% of them were men.
One skipped the timing question, 25 mentioned specific amounts of time, and eight said time for intercourse depends on the couple.
The survey may correct the public's "unrealistic" expectations for sexual performance to last longer, note Corty and colleagues in May's edition of The Journal of Sexual Medicine.

Premature Ejaculation

For the Fist time International Society for Sexual Medicine has defined - " Ejaculation in less than 60 seconds from the start of intercourse is "premature"

couples

Definition is now set Premature ejaculation occurs within a minute vaginal penetration every time during intercourse , time limit worried many men - so as to when they reach climax mistook them selves suffering from Premature Ejaculation.


Now my Question is, During the intercourse who will be tracking the time?