When I take first aid courses and we practice cpr on the dummies they use we wipe them down with sanitary wipes that come in packets like regular hand wipes do. It wouldn't hurt to get some of those as you should probably be wiping your own sweat off on a regular basis too. Otherwise soap and water should be enough if you aren't overly concerned about what is on there.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.