[avinium]

It's pretty common to cut 5-10kg in preparation for wrestling/judo competitions.

A natural 6kg fluctuation isn't inconceivable. I'm fairly sure I could get there starting dehydrated/carb-depleted and pounding a carb-heavy meal with a lot of fluids.

It definitely wouldn't be accidental, though.

[m0zg]

Cutting for competitions involves diuretics though. They literally piss out the weight to end up in their target weight bracket.