How on earth do people take body shots and shrug them off??

I was sparring a pro fighter today who was way better than me and for the most part it was just technical sparring until one of my low kicks got checked and he jumped in with a grabbing knee straight to my liver.

Oh man, I don’t think I’ve ever felt that much pain in my life. Immediately dropped to one knee on the mat and all my breath left me. He asked if I was okay and I tried to say I was fine but literally no words would come out of my mouth except some groans.

I’m laughing now thinking about it but I was just thinking if I was in a fight and got hit full force like that I’d just go down instantly like a sack of potatoes but I’ve seen fights where people seem to just shrug off multiple hits to the body much less less just one!

I’ve taken some shots to the head from some heavyweights and they stung but this was crazy.