Kit Harington absolutely HATES that he was born on Boxing Day, but ya can't hate on him for squaring up like a champ in the ring.
The "Game of Thrones" star worked up a sweat at a gym Thursday in NYC ... where he was attending a boxing class with a buddy, but clearly the spotlight belonged to him. Kit -- aka Jon Snow -- started off looking like a newbie but didn't take long before finding his rhythm.
Check out the pics and this vid ... his right hook's got potential.
It's a big weekend for Kit ... he's also hosting 'SNL' this weekend. As we reported ... the entire cast got together Wednesday for a huge 'GoT' bash also in the Big Apple. Kit, of course, was there looking dapper as hell in an all-black ensemble.
BTW ... Kit hates Boxing Day -- the day after Christmas in the UK -- because there's nothing more annoying than the dual birthday-Christmas gift. December babies know what we're talking about.
Also, Boxing Day's got nothing to do with the sport. Look it up.