A good reason to stay in shape

A good paper. In a nutshell, regular exercise can reduce URTI risk. It is interesting that elite runners are at higher risk.

Google: The compelling link between physical activity and the body's defense system

Moderator note: Steve, thanks for posting. It's an excellent read, but not RV-related per DR's posting rules. Rather than delete, I'll just close it given this day's health concerns. Y'all stay healthy!