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.

And work. Don't forget work.

> As a physician, does the idea that manufacturing and robotics will completely eliminate our need to work scare you at all?

Suppose a robot assistant could replace 60% ~ 80% of your time in the office as a physician. You would then have more leisure time to spend as you wish.