lower blood pressure, lower stress levels, better sleep, and an improved immune system. A 2017 study found that regular sex was linked to less heart disease in women in later life.A 2004 study of 30,000 men made headlines when it found that men who ejaculated more than 21 times per month had a lower risk of prostate cancer than men who ejaculated 4–7 times per month.The researchers followed up their study participants ten years later and found their initial results still held true.Regular sex or masturbation is also believed to help delay the onset of erectile dysfunction: A case of “use it or lose it,” perhaps.That’s all strong encouragement to keep having sex, or pleasuring yourself, regularly.On the other hand, not having sex isn’t.