Huberman: "Cold, in particular, can be leveraged to improve mental health, physical health, and performance... for endurance exercise, for recovering from various forms of exercise, for actually improving strength and power..."

One thing almost unequivocal about cold immersion is that it inhibits recovery and diminishes strength and muscle mass adaptations. 🧵1/4 2/4
There are a few probable mechanisms.

•Tracer studies show that cold water immersion after training significantly diminished muscle protein synthesis (fractional synthetic rate) for at least 5 hours. pubmed.ncbi.nlm.nih.gov/31788800/

•There's also a blunting of anabolic signaling with cold immersion: an acute decrease in satellite cell numbers and activity of kinases regulating muscle hypertrophy. pmc.ncbi.nlm.nih.gov/articles/PMC45…

If you're training for #muscle strength, power, or hypertrophy, STOP ice bathing after your sessions. It's almost certainly diminishing your returns. 1/5
#strength #training Evidence summary -> Exhibit 1. Cold-water immersion blunts the muscle's anabolic response to strength training. @JPhysiol @LlionARoberts 2/5

Our new case study highlights why it's important for physicians to better understand the body's response to #exercise #training. 🧵1/5

🔓journals.lww.com/jfmpc/Fulltext… #medicine #liver #physiology @theliverdr In Oct 2021, I had a routine blood test that revealed elevated liver enzymes. A later blood test with a different doctor showed the liver panel was "elevated and worsening", more than double the normal range for some variables. 2/5

𝐑𝐞𝐭𝐫𝐚𝐜𝐭𝐞𝐝 #vitaminD paper.
"The originally-published data are inaccurate and a complete set of corrected data is not available."

Here's a thread to outline the worrying data irregularities that led to this retraction.
#exercise #science #nutrition #research 🧵1/13 First and foremost, you can read here the full EIC retraction notice: ♾doi.org/10.1123/ijsnem…

♾And my "Letter to The Editor" in which I describe in more detail the most serious/perplexing issues: tinyurl.com/2p8f5mj7
🧵2/13

I was asked recently to provide some examples of health and fitness marketing that makes false claims and/or exploits human biases. I came up with a billion examples. Here are just 6:

#science #skepticism #criticalthinking #exercise #health 1/6. All-natural #wheyprotein. It exploits the irrational cognitive bias towards natural products.

The official #Olympics website endorsing #cryotherapy as an effective form of post-exercise recovery. Despite the fact the literature is very unimpressive, littered with low-quality studies, and tiny effects. #IOC

#science #pseuodscience #sport #exercise

olympics.com/en/video/the-c… A Cochrane review says it concisely: