Q&A Episode 404

Have a podcast question for Ben? Click the button at the bottom of the page (or go to SpeakPipe), or use the Contact button in the free Ben Greenfield Fitness app.

News Flashes.. -Why I save all my carbohydrate intake for the evening, usually in a post-workout scenario, followed by a 12-16 hour intermittent fast:

• Article: Greater weight loss and hormonal changes after 6 months diet with carbohydrates eaten mostly at dinner

-Blue light from modern, fluorescent lighting is damaging to the mitochondria in your retina:

• Article: Mitochondria as Potential Targets and Initiators of the Blue Light Hazard to the Retina

...and interestingly, not everyone responds the same way:

• Article: High Sensitivity and Interindividual Variability in the Response of the Human Circadian System to Evening Light 
• Iris Tech
• BGF podcast w/ Matt Maruca
• BGF podcast w/ Iris Tech founder Daniel Georgiev

-Here’s one good reason why sauna use makes you live longer, and why some people can get away with LESS heat therapy:

• Article: Anti-inflammatory heat shock protein 70 genes are positively associated with human survival.

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Listener Q&A: Is Earthing Dangerous?

Ray asks: After your podcast with Clint Ober, I was fascinated with the science and immediately began digging deeper into the topic. I ordered Clint's sleeping mats for me, my wife and two boys, and as you know the mats plug into the ground via a wall outlet. We immediately noticed a huge positive difference when we began sleeping on the mats. Then I started reading and watching videos about dirty electricity dangers when using earthing mats that plug into the ground with the home outlets. They say the long ground wires create loops in our homes, and act as antennas which pick up EMF's from everything including our appliances and wifi, and it focuses that EMF on our bodies while we sleep. Is this something you've researched, and if so, is it better to connect the mats using grounding rods?

In my response, I recommend: -My podcast with Clint Ober on grounding/earthing -Article: Beware of Earthing Misinformation from The Earthing Institute -Article: Studies Confirm Indoor Grounding Safety and Reduced Exposure to AC Voltage EMF's from The Earthing Institute Ben's Top Recovery Tactics

Aaron asks: I'm about a year into jiu jitsu, and I've noticed a common theme from most of the upper belts. Everyone is always injured. I know that soreness and pulled muscles are inevitable, but I'm talking about more extreme injuries that require some sort of surgery. Can you recommend any recovery and injury prevention tactics that will help me avoid similar injuries?

In my response, I recommend:  Can You Do Cold Therapy If You're Sick?

Carmen from Germany asks: I want to start cold therapy for health reasons, but also to not always feel as cold as I do right now. I've tried cryotherapy and cold showers, but I've always gotten sick afterwards. I have Hashimoto's disease, and I'm also recovering from adrenal fatigue. A doctor once told me I get sick after trying cold therapy because my adrenals can't handle the cold. Is this true? How can I start any type of cold therapy, and what else from cold showers can I do?

In my response, I recommend: -Article: Changes in plasma cortisol during acute cold exposure in euthermic European hedgehogs: thermoregulatory role of the hypothalamo-pituitary-adrenal axis -Article: Autonomic Nervous System and Adrenal Response to Cold in Man at Antarctica -Historical Survey: Catecholamines and Exposure to Cold-Effects of Acute Cold Exposure on Plasma Concentrations of Noradrenaline and Adrenaline in Sheep -Effect of epinephrine deficiency on cold tolerance and on brown adipose tissue -Scientists unearth vital link between fat, immunity and heat regulation -Cold acclimation affects immune composition in skeletal muscle of healthy lean subjects -The Effects of Cold Exposure on Leukocytes, Hormones and Cytokines during Acute Exercise in Humans -Immune Responses to Exercising in a Cold Environment

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