Today, you’ll learn about how microgravity affects sleep and physiological rhythms, the half a billion year old bioluminescent octocoral, and the truth about women’s synchronized menstrual cycles. 

Microgravity Effects 

• “Simulated microgravity affects sleep and physiological rhythms.” EurekAlert! 2024.  
• “Effect of 60 days of head down tilt bed rest on amplitude and phase of rhythms in physiology and sleep in men.” by Maria-Angeles Bonmati-Carrion, et al. 2024.  

Octocorals 

• “Glowing octocorals have been around for at least 540 million years.” by Jake Buehler. 2024.  
• “What is bioluminescence?” NOAA. N.D.  
• “Evolution of bioluminescence in Anthozoa with emphasis on Octocorallia.” by Danielle M. DeLeo, et al. 2024.  

Menstrual Sync 

• “Do women who live together get their periods together, or is it a myth?” by Marlene Cimons. 2024.  
• “Women do not synchronize their menstrual cycles.” by Zhengwei Yang & Jeffrey C Schank. 2006.  
• “Menstrual synchrony: Fact or artifact?” by Anna Ziomkiewicz. 2026.  

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