I'm 43. I weigh 175 pounds. I was average in HS and I don't think a 'kid' my size would have a problem kicking my a-- if we stepped onto a wrestling mat today. I'd tank after 1 minute, maybe 2 max. And, I'm not fat and out of shape. Jogging time and mat time are not the same thing. You must have both. I haven't had any mat time in over 15 years. Therefore, i'd get killed. And, I have always been slow (genetics: fast twitch muscle fiber ratio vs. slow twitch). So probably even the quick little dudes would make me look like a fool! ;-)
It is just a ROUGH sport and I have tremendous respect for the young men that do it well.