I remember when what's his face running his diet and doing all the cooking found candy bars under his pillow.
As far as the thread...he doesn't really blow up like with fat by over eating or being lazy,he's just a huge guy,but Travis Wiuff is probably the biggest LHW and comes back into the cage over 245 which is just ridiculous.I think he said over 250.
There's tons of guys whose bodies can gain and lose fast and easier than others,i'd see it all the time cutting weight in wrestling.Some shed weight easier just training hard and eating right.Anderson would start camp pretty high and when he was training real hard (like vs Sonnen II ) he was 192 two weeks out just from having a really hard camp.
For smaller guys I would say James Moontasri when he was at LW.He would get up to I think 215 and you couldn't even recognize him,he just looked like some pudgy asian.I think in this video he's 210 or something and says he's 185 in cage,I haven't watched it in years.