Kelvin misses weight for the same reason a lot of fighters do, they get out of shape inbetween camps and have poor diets. Fighters live such stringent lifestyles that once they're done with a camp and the fight is over, the binge and revert to a undisciplined life until they get the next call, think about Poirier's drawer of candy or Masvidal's addiction to fast food? Masvidal isn't a 190lb man but he gets his little pot belly and bloats up to that heavy. Most guys aren't cutting more than 10-15lbs of water the week of. Most fighters are not as big as their walk around weight may suggest either.
Have you never realized body builders, athletes in other sports that don't cut weight, actors etc are like 5'10 172lbs and dwarf a guy like McGregor? Tony Ferguson says he walks around 200lbs, do you really think Tony is bigger than 6'4 80in reach Michael Phelps who is 194lbs? People say McGregor is 175, some even say 180....Man Cristiano Ronaldo is only 174 and he makes McNugget look tiny. There's a lot of factors.
