And, look, I mean, to be perfectly blunt about it, it's important to get as many people as possible involved in this great insurance pool, if you will, including younger, healthier people who may need to go to the hospital, who may get sick, but who are less likely to than people who are 70 or 80 years old, or people who have preexisting conditions.

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When you add into their customer base a large number of people who are paying premiums but are less likely to get sick (the young adult demographic), this would be the expected result.

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This aversion is evolutionarily beneficial because they are less likely to eat them and get sick.

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There are other ways to get some exercise and reap the benefits - a Dutch study found commuters who cycle take less time off sick.

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