In How Not to Die, Michael Greger writes I've signed up for the half marathon on September 30. I can now run 9 miles by myself. And I want to go to do a marathon eventually but only once in my life because I think running for periods longer than an hour are detrimental to your health, at least to me they are. In any case, I came down with a common cold and I sort of thought that veganism was supposed to put an end to that based on this article https://www.onegreenplanet.org/natural-health/how-plant-based-eating-keeps-you-safe-from-colds/ and a few other snippets I've heard. Maybe I got the cold because I was only eating about 800 calories per day for a two week period. I've since scaled the intake back up to about 1500. In any case, I want to try nutritional yeast but should I eat this stuff every day or only on days of high physical exercise?