Compare experts › Peter Attia vs Gabrielle Lyon

Peter Attia vs Gabrielle Lyon

Peter Attia (physician) and Gabrielle Lyon (physician (do)) side by side: how they train, eat, supplement and sleep, how strong the evidence is, and how to build a plan from either or both.

Build a plan from bothSee the protocols
Words explained (14)
Zone 2
Steady cardio at a pace where you can still talk in full sentences, but not sing.
VO2 max
The most oxygen your body can use in hard exercise. A good measure of fitness; higher is better.
Intervals
Short hard efforts with easy recovery in between, such as 30 seconds fast, 90 seconds slow.
4 × 4
Four rounds of 4 minutes hard with 3 minutes easy in between. Also called Norwegian intervals.
Hinge
A movement that bends at the hips with a straight back, like a deadlift or picking a box up from the floor.
Mobility
Moving your joints freely through their full range.
Leucine
A building block of protein that helps switch on muscle building. Meat, fish, eggs, dairy and soy are rich in it.
Creatine
A well-studied supplement that supports strength and muscle.
Omega-3 (EPA, DHA)
Healthy fats found mostly in oily fish such as salmon, herring and sardines.
Time-restricted eating
Eating all your meals within a set window of the day, for example 8am to 6pm.
ApoB
A blood test that counts the particles carrying cholesterol. Linked to heart disease risk.
Rapamycin, metformin
Prescription drugs that some experts take hoping to slow ageing. Not proven for that, and never part of your plan.
Medicine 3.0
Peter Attia's name for preventing disease early instead of treating it late.
Centenarian
Someone aged 100 or older.

At a glance

MeasurePeter AttiaGabrielle Lyon
BackgroundPhysicianPhysician (DO)
Training split40% strength · 40% aerobic · 10% intervals · 10% mobility60% strength · 20% aerobic · 15% intervals · 5% mobility
Signature habitZone 2 + VO2 max30–50 g protein a meal
Protein1.6–2.2 g/kg~2.2 g per kg ideal weight
Training styleBalancedMuscle-first
Overall evidenceStrongStrong
FollowingInstagram 1.6M · YouTube 1MInstagram 1.2M · YouTube 288K

Training splits are our estimates from each expert’s published routine. Following checked October 2026.

The key differences

  • Lyon puts more of the week into strength: about 60% against 40%.
  • Attia puts more of the week into aerobic base (zone 2): about 40% against 20%.
  • In plans in their style, Attia's hard sessions are 4-minute intervals (Norwegian 4 × 4); Lyon's are 1-minute intervals.
  • We rate the overall evidence behind both protocols as strong.
  • Supplements that go into a plan: Attia, omega-3; Lyon, creatine monohydrate. Prescription items and personal stacks stay out of every plan.
  • Both include their own mobility or movement routine.

Protocols side by side

Each line is rated for the evidence behind it. “Doctor only” items never go into a plan.

Training

Peter Attia

  • Zone 2 cardio (a steady pace where you can still talk) about 3 hours a week, for example 4 × 45 min. Start with about 2 hours if new to itStrong evidence
  • VO2 max intervals: 4 min hard, 4 min easy, repeated 4–6 times, once or twice a weekSome evidence
  • Heavy strength training 3–5 times a week, focusing on grip, slow lowering, pulling and hip-hinge movementsStrong evidence
  • Stability and balance work woven into most daysSome evidence
  • Benchmarks such as carrying half your body weight in each hand for 1 minute (men; about 75% of that for women) and long dead hangsPersonal habit
  • Choose the physical tasks you want to manage at 100 and train toward them nowNote

Gabrielle Lyon

  • Resistance training 3–4 days a week, done with focusStrong evidence
  • 1–2 days a week of short, higher-intensity intervalsSome evidence
  • Steady aerobic work, such as a 30-minute session or a brisk walkStrong evidence
  • Move after meals: a walk, some air squats or a short bodyweight circuitSome evidence
  • For older adults who do nothing yet, any regular resistance training is the priorityStrong evidence

Eating

Peter Attia

  • Protein at least 1.6 g per kg of body weight a day. About 2.2 g/kg is the better target for active people with healthy kidneysSome evidence
  • Spread protein across about four meals of roughly 40–50 gPersonal habit
  • Follows no named diet. Focuses on energy balance and avoiding junk foodNote
  • Doubts time-restricted eating as a general tool and saves longer fasts for specific patientsNote
  • Says alcohol has no biochemical benefit. Personally keeps it to 0–8 drinks a week, at most 2 a dayPersonal habit

Gabrielle Lyon

  • About 2.2 g per kg of ideal body weight a day (she also gives 1.2–1.6 g per kg, sometimes up to 1.8 g per kg)Some evidence
  • 30–50 g of high-quality protein at the first meal, and a similar large dose at the last mealSome evidence
  • About 2.5 g of leucine (roughly 30 g of quality protein) per meal, and about 9 g of leucine across the daySome evidence
  • People eating mainly plants may need more total protein, around 1.6 g per kg, because plant protein is lower quality per gramSome evidence
  • For inactive people, about 130 g of carbohydrate a day, roughly 40–50 g per meal, with more after exercisePersonal habit
  • Older adults should avoid long fasts, which can speed muscle lossSome evidence

Supplements

Peter Attia

  • Fish oil reported at about 2 g EPA + 1.5 g DHA a day, aiming for a blood omega-3 level of about 8–12%Some evidence
  • Vitamin D, reported at about 5,000 IU a dayPersonal habit
  • Magnesium from several forms, about 1 g elemental a day in total (reported)Personal habit
  • Methylfolate and vitamin B12 to keep homocysteine below about 9 µmol/L, based on blood testsDoctor only
  • Prescription drugs such as statins or PCSK9 inhibitors to lower apoB when neededDoctor only
  • Treats rapamycin and metformin as unproven, experimental options, not general adviceNote

Gabrielle Lyon

  • Creatine supports muscle; she mentions possible brain benefits at higher dosesSome evidence
  • Prefer complete protein foods over leucine alone; amino acid supplements make most sense when a meal is low in proteinNote
  • She regards the official leucine allowance (about 2.7 g a day) as too low because it was based on young menNote

Sleep & recovery

Peter Attia

  • Allow 8–9 hours in bed with a fixed wake-up timeStrong evidence
  • Cool, dark bedroom, about 18 °CSome evidence
  • No food in the last three hours and no alcohol close to bedtimeSome evidence
  • Screens off well before bed. He keeps a second phone with no social appsPersonal habit
  • Sleep aids he has reported using: glycine, ashwagandha and magnesium L-threonate. Melatonin only for jet lagPersonal habit

Gabrielle Lyon

No specific guidance in what we reviewed.

Stress & mind

Peter Attia

  • Treats emotional health as a pillar as important as physical healthNote
  • Journaling as a regular practicePersonal habit
  • Keeps social media off his evening phone to protect wind-down timePersonal habit

Gabrielle Lyon

No specific guidance in what we reviewed.

Brain health

Peter Attia

  • Regular dry sauna (Outlive cites about 4 × 20 min a week at 80 °C or more, linked in Finnish studies to lower dementia risk)Some evidence
  • Sees ketogenic eating as a possible alternative brain fuel in early cognitive decline, based on small trialsSome evidence
  • Says the benefit of vitamin D for dementia risk is unclearNote

Gabrielle Lyon

No specific guidance in what we reviewed.

Weak spots to know

Peter Attia

  • Many of his exercise targets lean on observational studies that link fitness or strength to longer life. These show association, not proof that hitting a given number will add years.
  • A 2026 review in the Australian Journal of General Practice called the book's research base superficial. It said his intensive, personalised approach suits only a few affluent people, and that routine full-body MRI scans use a lot of resources and bring risks from incidental findings that the book does not discuss.
  • Some critics argue that the medications and screening tests he recommends for healthy people lack strong trial evidence, and that the risks could outweigh the benefits.

Gabrielle Lyon

  • Her daily target of about 2.2 g per kg of ideal body weight is well above the official allowance of 0.8 g per kg and the 1.0–1.2 g per kg that an expert group recommends for over-65s; whether intakes that high add further benefit for most older adults is still debated.
  • The 'leucine threshold' idea behind her per-meal targets and her food rankings is contested; critics such as Simon Hill argue that total protein matters more and that well-chosen plant proteins can meet needs.
  • Some of the foundational research she draws on, such as Layman's 2005 study, was partly funded by beef and food industry groups.

Build a plan from Attia, Lyon or both

Your free plan shows a week of gym sessions, cardio, a day of eating, supplements and mobility, fitted to your age, time and health.

Plan in Attia's stylePlan in Lyon's styleMix both

Questions

What is the main difference between Peter Attia and Gabrielle Lyon?

Their training split differs most in strength: Attia about 40%, Lyon about 60% (our estimate from their published routines). Attia's signature habit is Zone 2 + VO2 max; Lyon's is 30–50 g protein a meal.

How much protein do Attia and Lyon recommend?

Attia: 1.6–2.2 g/kg. Lyon: ~2.2 g per kg ideal weight.

Whose advice has stronger evidence?

We rate the overall evidence behind both protocols as strong.

Do Attia and Lyon disagree?

Not directly in what we reviewed. Their differences are in emphasis: lyon puts more of the week into strength: about 60% against 40%.

Can I combine Attia and Lyon?

Yes. In Build my mix you choose one expert per area, for example one for strength and another for eating. Your free plan shows the result straight away.

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Full sources are on each profile: Peter Attia · Gabrielle Lyon. Reviewed October 2026.