More sex for less Erectile Dysfunction

"Regular sexual activity preserves potency in a similar fashion as physical exercise maintains functional capacity,"

Frequent sexual intercourse may cut down on a man’s chances of developing erectile dysfunction, Finnish researchers report. “This is the same as any other part of the body. It’s what we in vascular surgery refer to as the ‘use it or lose it’ concept” .
Researchers took about 1,000 Finish men aged 55 to 75 and asked them how many times a week they had sex. All the men had "normal sexual function" at the beginning of the study.
They then followed the men for five years (presumably studying other things as well).
They found that men who had sex once a week or less had the highest risk for developing erectile dysfunction.
Men who averaged sex once a week had half the risk, and men who had sex three times or more each week only had a quarter of the risk of developing erectile dysfunction.
“Sexual activity will promote maintenance of normal erectile function down the line.”