Dr. Leah Lagos

Clinical and Performance Psychologist, Private Practice · 1 appearance on the record.

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authorscientistother@drleahlagos ↗drleahlagos.com ↗

Dr. Leah Lagos is an expert in heart rate variability biofeedback and resonant frequency breathing who consults with elite performers, including Olympic athletes and business executives. She is the author of Heart Breath Mind: Train Your Heart to Conquer Stress and Achieve Success.

15statements → 8claims → 6claims resolved → 50%fully supported → 3.93/5average certainty → 1.8/5average debate potential → ≈4.5/5argument clarity, estimated →

3 supported 1 partly supported 2 contradicted 2 not checkable as stated how the 8 claims stand · each chip opens the sources

8 assertions · 7 insights · every statement was checked. The predictions and assertions are the 8 claims: statements the public record can support or contradict. 6 are resolved, and 2 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Dr. argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Assertion Supported
Dr. Lagos: Chronic alcohol consumption consistently lowers heart rate variability
“There is evidence, certainly, that chronic alcohol use chronically lowers HRV.”
Dr. Leah Lagos Sep 19, 2023 ▶ 8:16 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress

Their most notable contradicted claim

Assertion Contradicted
Lagos: MRI Research Shows Resonant Breathing Prevents Brain Blood Vessel Constriction
“My colleagues at Rutgers looked at what happens To the brain during resonant frequency breathing. And what they found through MRIs was something called vasovagal constriction. So during stressful moments, the blood vessels would constrict to shunt blood flow a…”
Dr. Leah Lagos Sep 19, 2023 ▶ 47:19 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress

Expressed certainty vs assessment result

none yet certainty 1
none yet certainty 2
none yet certainty 3
50% certainty 4
100% certainty 5

weighted support: a fully supported claim counts one, a partly supported claim counts half. Each filled bar is clickable and opens exactly those claims; "none yet" means nothing said at that certainty level has resolved yet

How they sound: not measured why? →

We measure speaking style by listening to the audio itself, and a fair number needs at least 2,000 words from one person on tape we have measured. There is too little of Dr. Leah Lagos on measured tape to publish a rate. This says nothing about how they speak.

Everything Dr. Leah Lagos said on the Knowledge Project that made the record, most notable first. Filter by type, assessment or year in the ledger →

Insight
Dr. Lagos: Major Investing and Performance Decisions Require a Parasympathetic State
“Because if you're going out to a competitive event or making a, Let's say a big decision about how to spend money or invest. You want to be doing that from a parasympathetic state, not a sympathetic one.”
Dr. Leah Lagos Sep 19, 2023 ▶ 22:23 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Insight
Dr. Lagos: Consistent meal timing creates physiological safety and maximizes HRV
“What I see more frequently is that when we time the expected time that you eat, irrespective of what you're eating, but that you eat generally at the same time, let's say seven o'clock, one o'clock, six o'clock, five days a week, the body feels safe. It can pr…”
Dr. Leah Lagos Sep 19, 2023 ▶ 25:43 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Contradicted
Lagos: MRI Research Shows Resonant Breathing Prevents Brain Blood Vessel Constriction
“My colleagues at Rutgers looked at what happens To the brain during resonant frequency breathing. And what they found through MRIs was something called vasovagal constriction. So during stressful moments, the blood vessels would constrict to shunt blood flow a…”
Dr. Leah Lagos Sep 19, 2023 ▶ 47:19 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Insight
Dr. Lagos: Innately High HRV Correlates With Endurance Athletes
“There's no magic number, and it very much depends on your body, your system, your experiences in life. There are some people just born innately with higher levels of HRV. They tend, it's interesting, Shane, they tend to be endurance athletes.”
Dr. Leah Lagos Sep 19, 2023 ▶ 4:45 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Not checkable as stated
Dr. Lagos: Moderate caffeine doesn't impact HRV, but five-plus cups harms performance
“Two cups of coffee for most people doesn't have a huge impact on heart rate variability such that if you're a performer and you have a competition, I would, I wouldn't say that having two cups of coffee is really going to impact you. Having five cups or more s…”
Dr. Leah Lagos Sep 19, 2023 ▶ 8:47 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Partly supported
Dr. Lagos: 10-week breathing protocol automates parasympathetic stress response
“15 minutes, twice a day, 10 weeks, they've made, they've actually created a reflex where during stressful moments, the parasympathetic nervous system kicks in and helps to moderate.”
Dr. Leah Lagos Sep 19, 2023 ▶ 13:46 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Insight
Dr. Lagos: Parasympathetic activation creates flow and responsiveness, not just calmness
“The parasympathetic is associated with flow, and I wanted to find that it's not being calm, okay? It's being open, engaged, aware, and able to be receptive to the needs of the moment.”
Dr. Leah Lagos Sep 19, 2023 ▶ 15:28 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Contradicted
Dr. Lagos: Resonant Breathing Rate Matches Felt Comfort 90% of the Time
“If you can't get a hold of feedback, physiological feedback, 90% of the time, the rate that is someone's resonant frequency is the rate that just feels good.”
Dr. Leah Lagos Sep 19, 2023 ▶ 16:37 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Insight
Dr. Lagos: Specific songs can heighten HRV for certain people
“Music, for some people, can really produce a heightened HRV effect, and, you know, Joe and I can talk with you later about some of the things that we did along with the breathing to maximize HRV in real time for specific performance states, but you have to fin…”
Dr. Leah Lagos Sep 19, 2023 ▶ 24:08 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Not checkable as stated
Lagos: Resonant Breathing Protocols Yield Tangible Cognitive Gains Around Week Seven
“It doesn't happen instantly. It happens around week seven. So if you are going through this process, weeks one through four, you optimize your baseline. By week four, you start to feel the significant ability to let go. And, but by week seven, the cognitive ch…”
Dr. Leah Lagos Sep 19, 2023 ▶ 48:29 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Insight
Dr. Lagos: Positive Self-Talk Under Pressure Requires Prior Physiological Control
“That ability to inhibit negative self-talk, inhibit noise, inhibit fear, is physiologically mediated where you can choose it. And so the concept of, oh, just think positive or have positive self-talk is very hard for even the most elite of performers under hig…”
Dr. Leah Lagos Sep 19, 2023 ▶ 54:07 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Insight
Dr. Lagos: Higher HRV Gives Greater Control Over Stress Responses
“So the larger your HRV, the more control you have over your autonomic response to stress before, during, and after a stressor.”
Dr. Leah Lagos Sep 19, 2023 ▶ 2:32 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Supported
Dr. Lagos: Chronic alcohol consumption consistently lowers heart rate variability
“There is evidence, certainly, that chronic alcohol use chronically lowers HRV.”
Dr. Leah Lagos Sep 19, 2023 ▶ 8:16 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Supported
Dr. Lagos: HRV and sleep quality share a bidirectional physiological relationship
“Certainly HRV, high HRV is associated with better sleep. Low HRV is associated with conditions like insomnia and sleep apnea. Non-restorative sleep will negatively impact HRV, so there is this circular effect”
Dr. Leah Lagos Sep 19, 2023 ▶ 10:36 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress
Assertion Supported
Dr. Lagos: Resonant Breathing Averages Five to Six Breaths Per Minute
“It's generally between five and 6.5 breaths per minute, but everyone is slightly different, and we're able to maximize HRV on each breath.”
Dr. Leah Lagos Sep 19, 2023 ▶ 13:35 Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress

Appearances (1)

EpisodeDateSpeaking time
Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress Sep 19, 2023 34m
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