Peterson walking at 155lbs 3 weeks from fight.

Ever heard of sweating ? Try a sauna. You will drop water like its Christmas.
A lot of my friends are like "I lost two kilos after swimming". "Did you drink much water and use the sauna ?" i ask them. Yup, went to the sauna hand had some water.

Wtf ?
Also, Arturo Gatti went up 19 pounds and because of him the IBF has a secondary weigh in.
Chavez jr went up 19 pounds in his last fight and 20 before that.
Even Pacquiao has gone up as much as 15 or 16 pounds.
Ortiz weighed 164 against Mayweather. Sergio Martinez weighs that at fight night.