Quite frankly, this sounds like an argument against physical activity more than anything else. Plenty of people go for morning or lunch time jogs. In my neck of the woods, and at the right time of year, plenty of people go for a morning or lunch time skate. I even see people who go for a morning row.

We should be encouraging people to live healthier lifestyles, rather than discouraging them. That is especially true for those who have sedentary jobs.