500 Days Underground | Flashback Friday

How long could you survive without sunlight, clocks, internet, or another human being? This week, we flash back to when we learned about a Spanish athlete who went underground for an extraordinary experiment in isolation and stayed there for 500 days. But when it was finally time to bring her back to the surface, something much stranger had happened: she had lost her sense of time so completely that she believed only a fraction of those 500 days had passed. It's the bizarre true story of extreme isolation, hallucinations, human endurance, and what happens when time itself stops meaning anything. THIS ORIGINALLY AIRED ON PATREON 12/04/25 SHOW NOTES Become a supporter of this podcast: https://www.spreaker.com/podcast/scared-all-the-time--7084296/support. Get the latest episodes of our bonus show NEW FEAR UNLOCKED -- and a whole lot more! -- by supporting the show on Patreon: https://www.patreon.com/ScaredAllTheTime