my brother is a werestler slash boxer but he was a boxer first, simalarities are none other than hard work, even if ur in supreme shape u will fid urself gettin tired because it is a diffrent type of regimne and intensity, wrestles are really though and are in great shape but jus the fact that ur doin sumtin u never did before will get u tired, and the mental part is difrent cuz ur gettin hit , but i suggest it its great fun i been doin it for 6 years with 3 being consistent sohave fun and i wish u luck