I think it’s no coincidence. A physically fit couple can be perfectly happy just banging each other. They can casually and gracefully blow each other’s minds for hours. A couple of grease barges? They have to try everything, anything. The guy can barely even get his shriveled dick to surface from the layers of blubber. So they’ll engage in any manner of risky desperate sexual behaviors to get off. Anything but the healthy alternative of losing weight. No offense though, I’m sure it can be a fulfilling activity for mature adults