This week, Emily and Perry shine a light on red light therapy: its origins, its heroic use of the mighty mitochondria, and the supposed countless benefits (better mood, wound healing, facial rejuvenation, hair regrowth?) of sitting in front of a hot red light that may or may not even be able to penetrate your skin.

Plus: the disturbing return of polio, whether multivitamins have an effect on epigenetic aging, and if the pitch clock, while modestly good for Emily's enjoyment of baseball, is ruining pitchers' elbows.

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