[dokein]

I'll do you one better. People who work in an office are actively damaging their health. No unemployment required. We know that walking around and being active all day is better even if you also ride a SoulCycle bike for 30 minutes a few times a week.

In the short term, I think there is actually more awareness today of exercise and its benefits than e.g. the 1990s, although there is a large discrepancy between socioeconomic classes and between metropolitan and rural areas.

In the long term, we may be able to reproduce the benefits of exercise. There are a couple drug compounds that are in investigation. This will likely require at least a two-orders-of-magnitude better understanding of the human body--I seriously doubt that targeting a receptor will do the trick.

Alternately, we can just solve the ability to summon willpower.