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Navigating the "Wild West" of Supplements

Due to the fact that supplements are largely unregulated, what advice do you have for selecting reputable sources for supplements? Are there any specific red or yellow flags to look out for? On the other hand, what might give a clear "green" to go ahead and trust a given supplement or supplement company?

An Episode Dedicated to Chronotypes?

The topic of chrononutrition has been a super interesting theme Danny and Alan have continued to address. It would be great to hear more about chronotypes: what do we know about them? Are these more "nature" or "nurture" (i.e., are you born with your chronotype, or can you change it through behavioral modification)? What sorts of benefits and risks might be associated with various chronotypes, etc.? How might those with a particular chronotype make the best nutrition, fitness, and other choices to align with their chronotype (assuming such differences matter)?