My weight can swing by four stone.
I think that people's weight fluctuates. It happens. It happens to everybody.
My happy weight changes. Sometimes I eat more; sometimes I play more. I'll be different sizes all the time.
My weight often fluctuates by half a stone.
My weight fluctuates. I have years where I wear a size 10, and years where I wear a size 4.
I'm one of those guys that loses and gains weight out of my face.
My weight went up and down like a yo-yo.
My weight always fluctuates by 10 pounds.