A racing pulse and sweaty palms are well known as the signs of instant attraction. Now research has shown that, for men, just five minutes spent alone with a beautiful stranger causes so much stress, it may be bad for the heart.
The effects are worst for men who may think they're not "in the same league" as the woman sharing their space, but still try to attract her interest, scientists claim.
The anxiety rate of those men is said to be similar to jumping from an aircraft. Their cortisol levels rise even higher, bringing on the possibility of a heart attack.
Experts at the University of Valencia, in Spain, paid 84 male students to take part in an experiment that measured their cortisol levels before and after they had been left alone with an attractive woman.