What's with these weight fluctuations?

[disconnectedsmile]

i'm an active gainer, but i think i may have hit a little hitch.

so, i stepped on a scale on monday. it said 162 lbs.
i stepped on a scale on thursday, it said 166.
weighed myself yesterday, it said 161.
weighed myself today, it said 163.

can anyone tell me what's causing these rapid fluctuations?

 

[Jes]

 

[Totmacher]

 

[violet835]

 

[pdgujer148]

 

[isamarie69]

 

[adolan55]

 

[Gingembre]