How difficult is losing 31 pounds in a month to make 108 pounds in a month?

For those who have actually boxed amateur/professional or trained a boxer who fought:

How difficult is it to lose 31 pounds in a month, if you fight at 108 pounds? I guess that's about 30 percent of your weight. And is this common?

I have no perspective at all. I competed at TKD and I wrestled in high school, but I never had to cut this much weight. I wrestled at 140, and I normally walked around low 150s, so I never even had to cut 10 percent.

The reason I ask is because in a recent documentary Chang claimed that he had to lose 31 pounds in the Tokashiki fight in a month, and that became a hot topic in Korean boxing/MMA circles. He also said that he "failed" (though somehow he did make the weight), and as a result he wanted to quit multiple times in the Pusan August heat.

 

A useful perspective would be to know how much flyweights and junior flyweights during the same day weigh-ins lost in a month normally.

 

Ah, so losing 30 percent of one's weight within a month is not that atypical among boxers. I just cannot envision people doing this for a living - in some cases for over a decade. I knew boxers lost a lot of weight in a short time frame, but I didn't realize this much weight and in such a short window!

I think in Chang's case it was more being grossly overweight in between fights though. He's 5-3 and he didn't have the frame to walk around at 140 pounds.

 

He ws 5-3. So yeah, he was grossly out of shape between fights.