Helix Sleep

Thank you Helix Sleep for sponsoring! Visit https://helixsleep.com/lindsaynikole to take advantage of their Flash Sale Exclusive Partner Offer and get 27% Off Sitewide Hibernation isn't sleep it's survival at the edge of death. Watch bears drop their heart rate to 8 beats per minute, Arctic ground squirrels freeze below 0°C and somehow live, wood frogs turn into ice blocks for 8 months, and tardigrades survive being shot out of guns. Plus, meet the rotifer that spent 24,000 years frozen in Siberian permafrost and came back to life. Nature's deepest sleeps are wilder than you think. Oh! And I wrote a book, so definitely make sure to grab it—Epic Earth out now! Order Here: https://a.co/d/54fdZqI NEW MERCH- https://lindsaynikole.com/ #LindsayNikole #hibernation #wildlifefacts Don't miss a video! Subscribe NOW: https://www.youtube.com/@LindsayNikole?sub_confirmation=1 ABOUT LINDSAY NIKOLE Join zoologist Lindsay Nikole for vivid stories about evolution, animal behavior, and the wonderfully weird life around (and before) us. Each video dives into creatures you’ve never met and facts you’ll never forget, blending science with humor, visuals, and memorable explanations. From viral mystery IDs and prehistoric deep dives to myth-busting and conservation context, this channel makes complex biology easy and exciting to understand. Follow Lindsay Nikole here: Order Lindsay’s new book: https://geni.us/EpicEarth?brid=yl-xFobehfULq0HItSrw1g Instagram: https://www.instagram.com/lindsay_nikole Facebook: https://www.facebook.com/LindsayNikoleTheZoologist TikTok: https://www.tiktok.com/@lindsaynikole Spotify: https://open.spotify.com/album/2IDSBorwoeXSD3r67kFTQH?si=Mb2Dg1fgRXWZQzfIzSqgmg&nd=1 Merch: https://www.lindsaynikole.com Chapters: 00:00 The Wild World of Hibernation 01:36 Ectotherms vs Endotherms The Temperature Split 03:11 Heterothermy Nature’s Body Temperature Switch 04:34 Bears Sleeping Through Winter Like Pros 08:20 Arctic Ground Squirrels Surviving Below Freezing 10:12 Fat-Tailed Dwarf Lemurs Tails at 40% of Body Weight 11:06 Common Poorwill The Only Hibernating Bird 12:55 Wood Frogs Frozen Solid for 8 Months 15:13 African Lungfish Four Years in a Mucous Cocoon 16:16 Cryptobiosis A State of No Visible Life 17:12 Tardigrades Surviving the Vacuum of Space 19:34 Rotifers 24,000 Years Frozen in Permafrost 20:37 Nematodes The Contested 46,000-Year Record The Deepest Sleeps in Nature (That We Know Of) | Lindsay Nikole https://www.youtube.com/channel/UCrc2iv2-G1FZ3VscM3zu2jg