Im a mother with a science degree. In other words, Ive cleaned up explosive poop, projectile vomit, and Ive dissected things such as sheep eyes and sharks with rotting herring in their guts. Not much grosses me out. But sitting down on the leg press only to nearly slip right out of it because of the previous users butt sweat is disgusting. Further, gyms are similar to airports and daycare centers there are germs everywhere and you touch EVERYTHING. So do your fellow members a favor, and wipe down machines you use when you are done using them. It doesnt have to be a full scrub, but a quick wipe with the likely provided towels and sanitizing spray on the machine seat *and* handlebars should be sufficient. Basically, if your body touched it, wipe down that part.