The Deepest Sleeps in Nature (That We Know Of) | Lindsay Nikole
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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.
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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.
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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
@LindsayNikole
February 1, 2026 at 6:01 am
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
@newbie4789
February 1, 2026 at 6:01 am
Wait … Birds Hibernate under frozen lakes in winter 😂
@JakeFromYoutube
February 1, 2026 at 6:01 am
14:44 speaking of which, do you have a video in the pipeline about your experience at the La Brea tar pits?
@austinnerd
February 1, 2026 at 6:01 am
10:29 These little rodents really just exist to sleep 😂
@KapteinFruit
February 1, 2026 at 6:01 am
I hate ads 😞
@megalofirst1
February 1, 2026 at 6:01 am
What about that "dead" snail in the British museum that came to life after 5 years?
@MennoNate
February 1, 2026 at 6:01 am
2:32 we have a ton of skunk cabbage in the back of our property and I can confirm that shit stinks worse than skunk…
@AndieDenise
February 1, 2026 at 6:01 am
I wish I could avoid tax season, but I'm a tax preparer 😂
@josephseigle9068
February 1, 2026 at 6:01 am
I could see why arms would have less caloric value though, they are used quite often, reducing the need for body fat on the arms to keep you warm. Legs on the other hand, you need dense insulation (i.e. body fat) to keep your veins from getting cold since those are the largest veins in your body.
@heavymonster1501
February 1, 2026 at 6:01 am
Lazy ass animals 🙂↔️
@erichtomanek4739
February 1, 2026 at 6:01 am
"Common Poorwill, pitiful name."
r r r r r r r r r r r r r
@mattreynolds5671
February 1, 2026 at 6:01 am
Urea is also a big component in DEF. –
@kraze1982
February 1, 2026 at 6:01 am
yay cat!
@therandomman6647
February 1, 2026 at 6:01 am
What are you doing casually having a Warwick Corvette hanging on the wall? I must know!!
@robbyschannel9258
February 1, 2026 at 6:01 am
Yea bears actually do the kim jon in for a bit lol
@tahyang
February 1, 2026 at 6:01 am
Meanwhile up in 5hrs and still can't sleep
@zerada00
February 1, 2026 at 6:01 am
"nature is quite gay" yeah it is!
@COctagons
February 1, 2026 at 6:01 am
NGL, if I could, I'd be hibernating as much as those edible dormice. I'd pick one month (maybe June) every year to do all that annoying "being alive" crap, at least until costs of living go back to being bearable.
@c0rr4nh0rn
February 1, 2026 at 6:01 am
I would like to remind you that you can freeze a number of small mammals and microwave them to restart their bodies: https://pmc.ncbi.nlm.nih.gov/articles/PMC1363505/
@tmaire72
February 1, 2026 at 6:01 am
Dreaming Lemurs would be a great band name.
@jORDANiSKATE
February 1, 2026 at 6:01 am
Thank you for all the real content. You’ve cleansed my feed for years now, reminding me of my love of biology. You’re amazing, ma’am
@mrdavman13
February 1, 2026 at 6:01 am
12:57 MY FRIENDS NEED TO SUCK ON THISE FROGS
@Ronnirotten
February 1, 2026 at 6:01 am
13:13 Are you telling me that the frogs Katara and Sokka had to suck in in Avatar have a realistic basis?
@Mowberry_Jones
February 1, 2026 at 6:01 am
Those animals that slow they're breathing right down, would it be like one normal breath (then nothing) per minute or a really slow one that lasts a minute?
@Blue_J-th2fd
February 1, 2026 at 6:01 am
“Nature is quite gay! i.e. Never gives sh*t to you straight.” 😂
@stevendenton8994
February 1, 2026 at 6:01 am
I think I go into torpor …. You cannot tell by my profile pic but at one time my chest was nearly as large as the biggest gorilla in captivity…. I gotta brow ridge… ( very ape like) ( covered in hair ) I slimmed down since weight lifting days but I definitely torpor
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