>>10Stallman doesn't eat breakfast in the morning, his breakfast is at lunchtime. When people don't eat breakfast in the morning, their first meal of the day is normally big to account for the nutrition they needed for the morning as well as the nutrition they need for the day time. This makes it very easy for people to overeat in that first meal. This is Stallman's daily habit.
Secondly, Stallman has a knee injury that prevents him from one of his favorite pass-time of folk dancing. This makes it difficult to do any kind of exercise involving weight on he knees.