I don't get the mindset of these huge dudes who cut exorbitant amounts of weight to fight. Like I've said many times before I'm cool with guys draining fluid out of their systems and eating veggies for a few weeks to cut 15-25lbs to make weight, but when you hear about Rumble routinely cutting 50-60lbs to make weight you have to be asking questions about his psychological state. One could think he's scared of fighting dudes a similar size as him, or (more probably) he's still caught up in his college days when he wrestled at 174lbs. But whatever the case, renal functions are not worth sacrificing for whatever size advantage you think you'll get.