A reader brings a personal touch to this topic:
This subject is near-and-dear to my heart. I was a college athlete who never had to even think about what I ate to maintain low bodyfat. Then my workouts dropped to, say, 20% of what I had been doing when I stopped playing college bball and started working a full-time job. Typical story, I guess. The pounds crept on slowly, 5-10 a year, until, at 29, I was 50 pounds overweight. The weight came slowly but the realization came suddenly. I remember the first time I went to the beach and felt hesitation about taking my shirt off. Within a month, I was cringing every time I looked at myself shirtless in the mirror. I wasn’t obese, but I was fat, and I just didn’t like it, at all.
So I started doing actual research into what makes people fat, and it turns out, it’s not actually lack of exercise.