<human>: Can you provide a brief overview of the text?

I come from a family of skinny people. As teenager, i started to gain weight, and I spent most of my teenage years in with my weight between 133 -137 pounds (I'm 5'3"). I always wanted to get down into the 120s, and for ten years it was a massive struggle, and i only got down to 127 for less than 6 months when i first started university.

Then, as an adult, i gained more weight and got up the low 150s. Now i've lost weight over the last year, and am back at 133, and once again I am majorly struggling to get any lower. I'm starting to think that body is just wired to be this weight - it's pudgy on someone my height, but not unhealthy, and i'm starting to feel like going lower is a losing battle.
<bot>: Do we really have a 'natural set weight' that we struggle to get below (or above)? Is it possible to overcome?