This article from e Clinical Psychiatry News explains why former-President Clinton may have had a heart attack:
In a laboratory test intended to induce extreme stress, healthy subjects who reported engaging in penile-vaginal intercourse during the previous 2 weeks experienced significantly smaller increases in blood pressure than those who reported masturbating or engaging in noncoital sexual activity, Stuart Brody, Ph.D., said at the annual meeting of the Society for Psychophysiological Research.
The peak systolic blood pressure for the intercourse-only group averaged 130 mm Hg, while the other groups' averages ranged from 143 mm Hg to 165 mm Hg, which Dr. Brody described as “an enormous difference.” The effects on diastolic blood pressure were not as dramatic.
The magnitude of this effect was much greater than that reported in other studies. The beneficial effect of penile-vaginal intercourse on systolic blood pressure in the Trier Social Stress Test is apparently more pronounced than any other intervention, including whether the subjects smoke or have a family history of hypertension; whether they're using ACE inhibitors, -blockers, or oral contraceptives; or whether they exercise, are depressed, or are in marital distress, he said.
The beneficial effect of penile-vaginal intercourse on blood pressure seemed to disappear in people who also engaged in masturbation or noncoital intercourse during the 14-day period.
Dr. Brody described his results as politically incorrect: “The politically correct thing is to parrot the ideology first espoused by Kinsey and also by Herbert Marcuse, which is that all forms of sex are equivalent, except that intercourse is worse because it's part of the patriarchal power structure.”