My Character weight settings keeps changing on its own!?

[gm207]

Hello guys,

 

I'm constantly changing back my character's weight settings to where I had it, which is on max but every now and then my character's weight keeps dropping by itself, any reason why this is happening?

Note: I do not have pump iron mod installed, I never had.

It's getting really annoying to have to fix the weight settings constantly.

Please help