Navigate Select ESC Close

Study Discovers Perfect Fasting Length for Muscle, Fat Loss, and Brain Benefits

2026-07-15 People & Blogs
24.1k
1.2k
116
Thomas DeLauer
Thomas DeLauer
4.0m subscribers

Unlock all features

FREE: Get instant access to 10 AI summaries, chats, or transcripts per day.

Description

Get LMNT Electrolytes & Receive a FREE Sample Flavors Pack: http://drinklmnt.com/thomas This video does contain a paid partnership with a brand that helps to support this channel. It is because of brands like this that we are able to provide the content that we do for free. Click HERE to Subscribe: https://www.youtube.com/c/ThomasDeLauerOfficial?sub_confirmation=1 Check out TDL Clips for the best moments from the Thomas DeLauer Podcast: https://www.youtube.com/@TDLclips Please Subscribe to my Email Newsletter Here: https://www.thomasdelauer.com/life-optimization-tactics/ Follow More of My Daily Life on Instagram: http://www.Instagram.com/ThomasDeLauer Reference https://nutritionj.biomedcentral.com/articles/10.1186/s12937-024-01046-9 Timestamps ⏱ 0:00 - Intro 1:22 - Free Variety Pack of LMNT Electrolytes 2:17 - 16/8 Fasting vs Caloric Restriction 4:49 - Fasting Timeline - Hour by Hour 10:22 - Prolonged Fasting 13:09 - Increase Benefits of 16/8 18:43 - Why 20+ Hours Is Where the Magic Happens 19:15 - Reducing Visceral Fat & Fasting - Rhonda Patrick Interview

Top Comments (10)

@ThomasDeLauerOfficial 2026-07-15

My Nutrient-Dense Meal Plan is FREE. Comprehensive, yet simple to understand: http://www.thomasdelauer.com/eatrealfood - no strings attached, just a thank you for watching my vids and joining my newsletter. Hope you have success with it!

3
@Yes-Gi-Man 2026-07-16

You're like the wind, different direction every day....

19 2 replies
@julzjulz5466 2026-07-16

I’m going to do a protein-modified fast for 2 days, then a sardine fast for 1 day, followed by a prolonged 36–48 hour fast. After that, I’ll go back to a sardine fast for 2 days, then transition into a 16:8 intermittent fasting routine. I’ve done all of these individually before, so this time I’m combining them to see how I go. 😁

10
@oohwha 2026-07-15

I love that you are doing videos on fasting beyond 24-48 hours. I did a 7-day (168 hour) fast around an umbilical hernia surgery (bubble in the abdominal wall just above the belly button) where I started fasting 2 days before the surgery and continued 5 days after. It really is all about the "crisis" (the 48 hour mark, usually) where your body fully "switches into ketone mode" (more complicated than that, but the general idea). Once you get past 60 hours, you don't really feel hunger or food cravings anymore. After that, it's all about how well you prepared and how much sodium you've been consuming in the last day or 2. Electrolyte balance can literally be "life and death" once you go past 40'ish hours into a water fast... but once you figure out how to eat a pinch of salt here and there throughout the day, it tends to be manageable. The mental and emotional benefits are BLISSFUL though! ❤❤❤❤❤❤

19 4 replies
@EricWitte-v7t 2026-07-15

Most of my 72 hour fasts end about 70 but I spend 48 hours bringing food back slowly.

8 1 replies
@ownyourawsome 2026-07-16

30 hrs is my sweet spot.

5 1 replies
@yogimaster1 2026-07-16

The Monks knew this for a long time already 36 hour fast once a week like the sabbath

3
@nickevans2806 2026-07-15

I'm going to watch the video of course, but the thumbnail made me immediately say "Another video about the same thing?" I'm sure there's more nuance, but just a first glance thing.

3
@viper04af 2026-07-17

i noticed if i have to many carbs before trying to fast the fast is much harder from a mental perspective.

1
@rararara7009 2026-07-16

Thank you, I'm so glad you brought this up. I recently started doing 16hr fast and lost 14lbs and inches in 3.5wks. I know the weight will slow down, but i'm going to start doing exercising during my fast.

0

Unlock the Data Inside
Turn Videos into Knowledge

  • Get FREE 10/day: transcripts, summaries, chats
  • Chat with videos, export text & PDF
  • $1 free API credit for RAG, chatbots & research

Free forever plan • All features unlocked

App screenshot