Physiology Friday #163: The Performance-enhancing Effects of a Pre-exercise PoopRunning on empty may have its benefits.Brady HolmerMay 05, 2023∙ Paid73ShareGreetings.Welcome to Physiology Friday!As always, details about all of the sponsors can be found at the end of this newsletter!Physiologically Speaking is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber.SubscribeContinue reading this post for free, courtesy of Brady Holmer.Claim my free postOr purchase a paid subscription.