People must be made so different. Exercise is the main factor in my size & weight. Like, even getting a job where I have to go up the stairs makes a difference.
And remember that there are so many benefits to exercise, beyond body shape. Cardio is so good for your heart and helps ease anxiety, lifting is so good for your bones, yoga helps keep you resilient & mobile so you don't break when you fall down, and helps with balance.
All of them help offset all the sitting most of us have to do at work.

I did. And I do like grapefruit juice - it wasn't bad at all, just felt like I could have had grapefruit juice instead!
Campari and grapefruit juice, though - that was interesting. I did that with vodka & a splash of lime, and enjoyed it a lot.