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The Hidden Reason You Feel Exhausted & How to Feel Better Now

If you’ve been feeling exhausted, tired, bloated, anxious, in pain, or just not like yourself, get ready for an explanation you’ve never heard before. Today, Mel sits down with one of the most respected medical researchers in the world, gastroenterologist Dr. Brennan Spiegel, to uncover the overlooked, invisible force that’s having a shocking impact on your energy, strength, gut health, mood, and every single cell in your body – even how fast your body ages. Whether you’re dealing with fatigue, back pain, swelling, digestion issues, or a heaviness in your body that you can’t shake, Dr. Spiegel says these are all signs you shouldn’t ignore. What Dr. Spiegel reveals will challenge the way you think about your body and, more importantly, give you a completely new, practical way to start feeling better immediately. And it may give you the words and the insight you’ve been missing to help your aging parents and other loved ones finally start feeling better, too. By the end of this episode, you’ll understand: -Why a “bendy” pinky might be a clue to what’s going on in your gut -10 foods that boost serotonin production in your body -The most effective treatment for IBS - and it’s probably not what you’ve tried -A quick way to notice how the force of gravity is showing up in your body -How to make yourself taller in just a few minutes -Why standing on one leg is linked to a longer life -How a weighted vest can change your posture almost immediately -A surprising reason rollercoasters feel unbearable for some people -What “gravity management” looks like in real life -One small habit that can improve how your body handles gravity Dr. Spiegel says that powerful, invisible force shaping every moment of your life is one you can learn to work with – and he’ll show you how. This is one of those conversations that will change how you see your body, your health, and what it means to be fully alive on this planet. For more resources related to today’s episode, click here for the podcast episode page: https://www.melrobbins.com/episode/episode-402/ Follow The Mel Robbins Podcast on Instagram: https://www.instagram.com/themelrobbinspodcast I’m just your friend. I am not a licensed therapist, and this podcast is NOT intended as a substitute for the advice of a physician, professional coach, psychotherapist, or other qualified professional. Got it? Good. I’ll see you in the next episode. In this episode: 00:00 Meet the Guest 01:53 The Hidden Force Behind Your Health Problems 07:03 Why You Feel Tired, Weak, and Drained 12:16 This Simple Habit Is Crushing Your Organs 15:52 The Warning Signs You’ve Been Ignoring 22:51 The Hidden Link Between Gut and Mood 26:50 The 10 Foods Your Body Needs 29:31 The 10-Second Test That Reveals Your Lifespan 33:46 The Dead Hang Challenge 37:02 Grip Strength Matters 38:47 Your Body Needs More Water Than You Think 40:27 Why You Feel Off: You Were Built For This Planet 43:21 How To Feel Calm Instantly 47:01 How to Know You’re On the Right Track — Follow Mel: Instagram: https://www.instagram.com/melrobbins/ TikTok: http://tiktok.com/@melrobbins Facebook: https://www.facebook.com/melrobbins LinkedIn: https://www.linkedin.com/in/melrobbins Website: http://melrobbins.com​ — Sign up for Mel’s newsletter: https://melrob.co/sign-up-newsletter A note from Mel to you, twice a week, sharing simple, practical ways to build the life you want. — Subscribe to Mel’s channel here: https://www.youtube.com/melrobbins​?sub_confirmation=1 — Listen to The Mel Robbins Podcast 🎧 New episodes drop every Monday & Thursday! https://melrob.co/spotify https://melrob.co/applepodcasts https://melrob.co/amazonmusic — Looking for Mel’s books on Amazon? Find them here: The Let Them Theory: https://amzn.to/3IQ21Oe The Let Them Theory Audiobook: https://amzn.to/413SObp The High 5 Habit: https://amzn.to/3fMvfPQ The 5 Second Rule: https://amzn.to/4l54fah

Mel RobbinshostDr. Brennan Spiegelguest
Jun 8, 202654mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

Reframing fatigue and pain as gravity intolerance—and fixing it fast

  1. The episode reframes widespread issues like exhaustion, dizziness, back pain, swelling, and IBS as signs your body is struggling to “tolerate” gravity due to modern habits like sitting, weakness, stress, and ultra-processed diets.
  2. Spiegel connects posture and core/back strength to digestion, describing the gut as a suspended system that can become “kinked” and compressed by slouching and weak support structures.
  3. The conversation links gut health to mood and physical stability through serotonin, emphasizing that most serotonin is produced in the gut and supports muscles, circulation/lymph flow, and overall “upright” function.
  4. Listeners are given quick self-assessments—single-leg balance (10 seconds), grip strength, and the “dead hang” (aim for 1 minute)—as practical proxies for longevity and whole-body resilience.
  5. Actionable strategies include strength and balance work, dead hangs, inversions/yoga, weighted vests, better hydration, sunlight/sleep, and a tryptophan-focused “Stack 10” food list to support serotonin production.

IDEAS WORTH REMEMBERING

5 ideas

Many “random” symptoms may share one root: poor gravity tolerance.

Spiegel groups fatigue, dizziness on standing, swelling, chronic pain, anxiety/depression, and GI complaints as manifestations of the body struggling to stay upright and circulate fluids effectively in a gravity-loaded lifestyle.

Slouching can mechanically disrupt digestion.

Hunched posture compresses the abdomen and diaphragm, which Spiegel likens to kinking a garden hose; building upper-back and core strength helps “open” the torso and reduce downward drag on the gut.

If you’re flexible on the outside, you may be “stretchy” on the inside too.

Extreme joint hypermobility (pinky bending far back, thumb to forearm) is presented as a clue that internal support tissues may allow more organ “sag,” potentially contributing to gas, discomfort, or bacterial overgrowth—worth discussing with a clinician.

Exercise is positioned as the most effective IBS therapy in trials.

He cites randomized trials showing multiple movement styles (yoga, tai chi, strength training, running/swimming) improve IBS symptoms, reframing movement as a way to restore structural and autonomic “upright” function.

Serotonin is framed as a ‘gravity-management’ chemical made mostly in the gut.

Because ~95% of serotonin is produced in the gut, Spiegel links microbiome and diet to mood, muscle tone, circulation/lymph movement, and the felt sense of being mentally and physically “elevated.”

WORDS WORTH SAVING

5 quotes

So many of the problems that we experience in life, pain, anxiety, depression, dizziness, exhaustion, swelling in your body, all of these have one thing in common. They're forms of gravity intolerance, and that's just so out of left field.

Dr. Brennan Spiegel

Just about every disease, if you look deep enough, you're going to see that it's a consequence of m- of mismanaging the forces of the planet.

Dr. Brennan Spiegel

It's not even about good posture, it's that developing that strength and that awareness-... is how you work against the gravity that's pulling you down.

Mel Robbins

When you're riding a rollercoaster, you're practicing your death.

Dr. Brennan Spiegel

You and I are here because thousands and thousands and thousands of people before us, just in our own lineage, somehow found a way to stand up and stay up, okay? A little longer and a little better and a little stronger than everyone else did.

Dr. Brennan Spiegel

Gravity intolerance as a health frameworkPosture, slouching, and organ compressionTensegrity (tensile integrity) and “seams” of the bodyIBS, back pain, and exercise as therapyGut microbiome, tryptophan, and serotoninBalance, grip strength, longevity proxiesDead hang challenge and weighted trainingHydration targets and “pumps and tubes”Breathing/vagus nerve grounding resetEnvironmental “up vs down” psychology (space, ceilings, mood)

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