Having sex twice a week can reduce heart disease in men by half, study says. – I always loved studies. – The study, of more than 1,000 men, shows sex appears to have a protective effect on the male heart but did not examine whether women benefit too. But also, men who have frequent sex might be more likely to be in a supportive intimate relationship. ‘This might improve health through stress reduction and social support.’ Love – sex has long been regarded as good for both physical and mental health..men who ejaculated through sex or masturbation at least five times a week are much less likely to develop prostate cancer.