399: The Latest Science On Low Carb Diets, Is Fasting An Eating Disorder, Should Lean Females Fast, How To Combat Sleep Deprivation & Much More.

Affiliate Disclosure

Body, Health & Wellness, Parenting, People, Performance, Podcast, Podcast-new, Recovery & Sleep

Q&A Episode 399

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. Click here for some tips on how to have the best chance of having your question featured on the show.

– The morning brew recipe Ben mentions in intro:

Alright, this recipe is fully loaded fuel that tastes like ambrosia of the gods. I tried it out this morning and my brain has been humming along quite nicely since about 5am. Here's the full recipe (yeah, you need plenty of ingredients, but it's worth it). Into a Nutribullet or any other heat-friendly blender, add the following:

– 2 heaping tablespoons of MiCacao mix (this is a mix of cacao nibs and cacao shells that gives you the experience of drinking pure chocolate with no calories)

– 2 packets Four Sigmatic Chaga mushroom extract

– 2 packets Four Sigmatic Lion's Mane extract

– 1 dropperful Omica Organics butterscotch toffee stevia

– 1 teaspoon of a good salt (I used Colima salt)

– 12-16 piping hot ounces of Kion Coffee

Blend on high for about 90 seconds, then open your blender carefully as contents can expand and get foamy (and the foam is oh-so-delicious). I may or may not have also put 0.5 grams of psilocybin extract into this mix, but that's your call. ;) Bon appetit!

News Flashes…5:30

Special Announcements…28:45

Click here to follow Ben on Instagram, and get ready for some epic stories about his morning, day and evening routine! 

Here's Where Ben Is Speaking And Traveling Around The World Coming Soon

August 3-4, 2019: Colorado Rockies Ultra, Beast, and Sprint Weekend –  Aspen, CO. The mountains are calling! High in the peaks of the Rocky Mountains, team members from my company, Kion and I will be experiencing the immense beauty of Colorado while conquering climbs, crawls, carries, and traverses. We hope to see you there! Sign up here!

September 12 – 15, 2019: RUNGA Immersion, Napa Valley, California. I attend this total mind-body reboot retreat each year with my wife, Jessa, to connect with a handful of friends and YOU can be one of them! I would love if you could join me at this retreat. Click here for details on this incredible event!

September 27 – 29, 2019: Spartan World Championships, Squaw Valley, California. Right beside Lake Tahoe, this epic venue was once host to the 1960 Olympic Winter Games. Join me there for the greatest obstacle course race in North Tahoe Lake, Olympic Village, CA. Sign up here!

View Ben's Calendar Here

Click here for the full written transcript of this podcast episode.

This Podcast Is Brought To You By

Kion: My personal playground for new supplement formulations, Kion blends ancestral wisdom with modern science. Ben Greenfield Fitness listeners receive a 10% discount off your entire order when you use discount code: BGF10.

Thrive Market: Organic brands you love, for less. Your favorite organic food and products. Fast and free shipping to your doorstep. Receive 25% off your order when you use my link!

Native: Native creates safe, simple, effective products that people use in the bathroom everyday. Count on trusted ingredients and trusted performance. Shop at my link and save 20% off your first purchase when you use discount code: BEN

Listener Q&A

Is Fasting Dangerous For Lean Females?…36:00

Jenny asks: You've mentioned on the podcast that fasting doesn't always work well for lean females. So should lean females like myself avoid fasting altogether? Or is there a fasting protocol you would recommend that will have a positive impact on my health?

In my response, I recommend:

How Newborn Parents Can Sleep Better…49:30

Jack asks: You mentioned in Q&A 398 about the physiological changes that occur in men when they become fathers. About a month ago, my wife gave birth to identical twin boys, and as you know, all sleep schedules go out the window. Do you have some tips to improve sleep quality when I'm bound to be waking up every 2-3 hours during the night?

In my response, I recommend:

C-Reactive Protein Levels and Tendinitis…1:03:10

Jackie in Japan asks: Is it possible to have plantar fasciitis and full-blown achilles tendinitis in both feet and have a C-reactive protein level of .01-.03?

In my response, I recommend:

How Far From Your Body Should Infrared Light Be?…1:09:22

Darryl asks: How close to my body should I put the JOOVV Go? The manual says it should be 2-6″, but I oftentimes will put it directly on my skin to help heal an injury and it seems to be just fine. I also heard you say in a previous podcast that your wife puts the device on her face. Can you give some guidance on how close is too close?

In my response, I recommend:

Giveaways & Goodies

– This week's top iTunes review – gets some BG Fitness swag straight from Ben – click here to leave your review for a chance to win some!


Prior to asking your question, do a search in the upper right-hand corner of this website for the keywords associated with your question. Many of the questions we receive have already been answered here at Ben Greenfield Fitness!


Ask Ben a Podcast Question

5 thoughts on “399: The Latest Science On Low Carb Diets, Is Fasting An Eating Disorder, Should Lean Females Fast, How To Combat Sleep Deprivation & Much More.

  1. Dan says:


    Couldn’t listen to the episode because there was some audio issues- sounded like there was a second track running on a 2 second delay. I’m not sure if this was an issue with my podcast player (Pocketcasts), but it hasn’t affected any other podcasts I have.

  2. AJ says:

    Great episode and amazing points on fasting!

    One thing though – everybody has MTHFR. It’s all about the mutation that one has and acting on it accordingly.

    I believe there are 6 different mutations throughout the population.

    Just got inspired to write an article on it!

  3. Sam says:

    Hi Ben. Regarding the low carb study, and your mention how low carb diets could work for tennis/soccer players etc, is it odd that there doesn’t seem to be studies done on how these sportspeople could benefit from low/lowish carb? And do you think we may hear about more pro football/tennis/soccer/whatever else sportspeople going lower carb/paleo/etc in the next few years? Thanks.

  4. Peter says:

    Hallo Ben!

    Got a podcast idea for you – that’s not one of the categories in your form, so I’ll post it here on the latest podcast instead. :-)

    What ordinary fruits could easily be planted to be trees by the side of a trail?

    I’m a trail runner and this question’s inspired by the Outdoor Magazine article earlier this year about us being lazy bums not doing our share of trail maintenance. So I started thinking, is there an easier way to do that than bringing a dirt shovel along by strapping it to the back?

    And I came up with the following; How about just bring some fruits along on my trail run, eat them, then planting the cores so that there in the future will be a natural aid station tree by the side of the trail. Long term maintenance is also maintenance, right?

    But what fruit cores should be used? I figure most apple cores would work, probably many pear cores too, but what about avocado cores, apricot cores or cherry kernels?

    I once spotted a cherry tree behind an abandoned old cottage near a trail, full of fruits it was exactly what I needed at the time, and I’ll give that memory credit for coming up with the idea.

    I figure your podcast would be a good one for bringing on a specialist or two in this area. What fruits would be the best? Are different seasons better for different fruits? How deep should one dig? How important are the type of terrain? Does altitude matter? Etc.

    And speaking of long term planning; ”Have you ever planted a tree along the side of a trail?” is a question you’ll be able to ask all your future guests for a possible bridge to enviromental issues, or just as one of those standard ending questions so many podcaster have. It’s a win-win!

    // Peter

  5. Jenny says:

    Thank you Ben for answering my question re lean females and fasting. Do you think it is important for healthy aging to do a 24 hour fast in the way you stated periodically? How often? How about a fasting mimicking diet? Thank you so much. You are awesome! You may remember me. I met you at Runga in Panama and have been learning from you for many years.

Leave a Reply

Your email address will not be published. Required fields are marked *