Manners for Missionaries 7: "Fitness and Nutrition" (1994)

This video is aimed at teaching etiquette to everyone but is aimed primarily at full-time LDS missionaries. While not an official production of either Brigham Young University or the LDS Church, the creators were faculty and instructors for both BYU and the Provo MTC, and the film has been shown at many missions through the world over the past two decades.
This segment covers the importance of good diet and exercise and finishes out the series.

[@ErikDobell]

This one has some surprisingly good advice.

[@michellesunshinestar]

I've been in the hospital for dehydration. It really is serious. They gave me an IV with fluid, and I was able to go home. The ironic thing was I was on the phone with my mom when I passed out. I'm better about it now.

[@julians9070]

Learn proper food combining. It is called Trophology. The nutritional science of proper food combining. It is compatible with the book of Mormon. As appropriate exercises, try Tibetan rites.