[liquidben]

First, the article never explicitly states that the author didn't try exercise.

Second, getting up and exercising is a complementary behavior to changing your eating habits. Neither negates the other and both together are best.

With luck, the author will feel more energetic after the diet change, and will then be motivated to start an exercise program. (or just nail the early donut, shrugs)

[jlees]

I do exercise, but not as much as I'd like to. Half the trouble is finding time in a busy day when I still think of myself as horribly unfit (I recently lost 70 pounds and am a lot fitter than I used to be!).

One of the first things I tried to get my body clock sorted out was morning gym sessions, but I just couldn't afford the time or subscription cost.

[yef]

Try morning jogs outside. Start slow. It does wonders for my energy level and clarity of thought for the rest of the day.