Joel Carmichael, DC, PhD

Chiropractic sport & spine clinician, researcher, and educator. Recent work: @NASSJournal and @ChiroManTher

[Joel Carmichael, DC, PhD @drcarmichael]

Me too.

[David Sinclair @davidasinclair]

@n_codetradez @Nature Working on it 🙏

[Joel Carmichael, DC, PhD @drcarmichael]

@AnthropicAI — Claude Pro subscriber locked out of all desktop/browser access across multiple browsers and machines. Server-side issue confirmed. Mobile-only for 10d w/active workflows blocked. Support ticket 215474176699681 awaiting human response. Requesting urgent escalation.

[Camus @newstart_2024]

Sleep scientist and neuroscientist Matthew Walker made a compelling case: sleep is probably the greatest legal performance-enhancing tool that most athletes still under-use.

Elite examples stand out — Roger Federer aims for around 12 hours (night + nap), Usain Bolt regularly got 9.5–10 hours plus strategic naps (including one world record broken after just 35 minutes awake), and LeBron James prioritizes 12 hours.

But Walker emphasizes it’s not only about pre-game sharpness. Post-performance sleep drives critical recovery: slashing inflammation, repairing tissue, and preparing for the next event in back-to-back schedules.

Cut sleep to 6 hours or less and consequences stack up fast: 30% drop in time to exhaustion, reduced strength, impaired oxygen use and cooling, plus dramatically higher injury risk. One tracked season showed athletes sleeping ≤6 hours faced ~80% injury chance. At 9 hours, it dropped to 15–20%.

I’ve always respected training and nutrition, but Walker’s data made me confront how often I’ve treated sleep as optional. For anyone serious about performance or longevity, this feels like one of the highest-ROI changes available.

In a grind-culture world, consistent deep sleep might separate sustainable success from burnout and repeated injuries.

What’s your current sleep average during heavy training or busy stretches — and have you ever tracked how it directly affects your performance or recovery?

[Joel Carmichael, DC, PhD @drcarmichael]

@AlexFinn @alexwg @devontriplett21 Regarding Henry...

... brilliant!

[Joel Carmichael, DC, PhD @drcarmichael]

#NewProfilePic

[Joel Carmichael, DC, PhD @drcarmichael]

“My interest in science is to simply find out about the world, and the more I find out the better it is, like, to find out.”
~Professor Richard Feynman
💯

[Joel Carmichael, DC, PhD @drcarmichael]

@HuskGuys Johnny Rodgers (spelled correctly)

[Joel Carmichael, DC, PhD @drcarmichael]

@HuskGuys Am I the only one? I think EJ’s ball-carrying and sudden changes in direction resemble Johnny Rogers more than any other Husker elite player (with no disrespect to Ameer.) Regardless of who he matches best, I’m lovin’ his moves and desperation to gobble yards!

[Tansu Yegen @TansuYegen]

Unbelievable…

[Science girl @sciencegirl]

Laminar flow with a spoon

[Big Ten Football @B1Gfootball]

After scoring his first career TD in @HuskerFootball’s dominant victory, TE Luke Lindenmeyer proposed to his girlfriend on the cheer team ❤️

[Joel Carmichael, DC, PhD @drcarmichael]

@Conservative1AZ @Ronxyz00 @grok Nope. 4 yrs/1 mo. Pandemic lockdowns lowered the price of gas to 1.94 in August 2020. Fair and balanced.

[Joel Carmichael, DC, PhD @drcarmichael]

@Conservative1AZ @Ronxyz00 @grok Grok, is August 2021 to August 2025 inclusive of a 5 year span of time?

[Joel Carmichael, DC, PhD @drcarmichael]

@HuskerFootball Hey Coach — I agree with the boys. Y’all oughta ran that thing out EVERY GAME! They want it. Fans want it. You’re rippin’. Come on, now Coach!! #GBR!!

[Gary Brecka @thegarybrecka]

How to build habits without burning out:
Morning: 1 non-negotiable
Afternoon: 1 non-negotiable
Night: 1 non-negotiable

Track streaks, not perfection.

[Joel Carmichael, DC, PhD @drcarmichael]

@Girlpatriot1974 🤯

[Joel Carmichael, DC, PhD @drcarmichael]

Hi Jordi — I have great respect for your incisive analyses. And I am just starting g to learn. I saw this post today and wondered how China could produce so much power so quickly, and whether that influences your Exxon/Chevron thesis. Further, in the context of Eric Schmidt’s views, if China can produce that much power that quickly, who wins the AI race?

[CU Physical Therapy @CUPhysTher]

#Newpub in N Am Spine Soc J. by Drs. @drcarmichael, @physiobade & team Scapular #pain in cervical radiculopathy: A scoping review. https://t.co/Ul9ZWaxpHM

[Brenden Dilley @WarlordDilley]

Something is happening with our culture...

[Joel Carmichael, DC, PhD @drcarmichael]

While you can practice evidence-based medicine without outcomes data collection, YOU CAN'T PRACTICE EXCELLENT, ACCOUNTABLE, CONTINUOUSLY IMPROVING EVIDENCE-BASED CARE WITHOUT IT.