Compare experts › Rhonda Patrick vs Kelly & Juliet Starrett

Rhonda Patrick vs Kelly & Juliet Starrett

Rhonda Patrick (biomedical scientist) and Kelly & Juliet Starrett (physical therapist; attorney & ceo) 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 (10)
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.
Loaded carry
Walking while holding something heavy, like shopping bags or dumbbells.
Mobility
Moving your joints freely through their full range.
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.
Mitochondria
The parts of your cells that turn food and oxygen into energy.

At a glance

MeasureRhonda PatrickKelly & Juliet Starrett
BackgroundBiomedical scientistPhysical therapist; attorney & CEO
Training split30% strength · 40% aerobic · 30% intervals · 0% mobility10% strength · 30% aerobic · 0% intervals · 60% mobility
Signature habitSauna 4–7 × a week10 tests, 10 practices
Protein~1.6 g/kg1.5–2.2 g per kg
Training styleInterval-heavyMobility
Overall evidenceStrongSolid
FollowingInstagram 1.2M · YouTube 731KYouTube 390K

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

The key differences

  • Patrick puts more of the week into strength: about 30% against 10%.
  • Patrick puts more of the week into aerobic base (zone 2): about 40% against 30%.
  • Patrick puts more of the week into intervals: about 30% against 0%.
  • The Starretts put more of the week into mobility and stability: about 60% against 0%.
  • In plans in their style, Patrick's hard sessions are 4-minute intervals (Norwegian 4 × 4); the Starretts' are 1-minute intervals.
  • We rate the evidence behind Patrick's protocol higher: strong, against solid for the Starretts.
  • Supplements that go into a plan: Patrick, omega-3, vitamin d with k2; the Starretts, none (food first). 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

Rhonda Patrick

  • At least 10 minutes of vigorous exercise a day; she suggests this should replace the 10,000-step goalSome evidence
  • Norwegian 4 × 4: four 4-minute intervals, hard but not all-out (the original protocol uses about 85–95% of max heart rate), with 3-minute recoveries, 1–2 times a week; build up graduallySome evidence
  • Keep daily walking too: step benefits level off around 6,000–8,000 steps a day for older adultsStrong evidence
  • Strength training at the start of most sessions, supported by enough proteinStrong evidence
  • Short 'exercise snacks' (e.g. 1 minute of squats or burpees) spread through the daySome evidence

Kelly & Juliet Starrett

  • Walk 8,000–10,000 steps a day, up to 12,000 if you canStrong evidence
  • Sit on the floor for at least 30 minutes a day, changing positions (cross-legged, 90/90, long sitting)Personal habit
  • Practise getting down to and up from the floor; test with the sit-and-rise testSome evidence
  • Daily deep-squat time: hold your deepest squat for five breaths as a test, plus sit-stands from a chairSome evidence
  • Daily balance practice; test standing on one leg with eyes closed (SOLEC) and putting on shoes while standingSome evidence
  • Optional rucking: start with about 2 kg for a mile, three times a week, and build up over about a monthPersonal habit

Eating

Rhonda Patrick

  • Protein about 1.6 g per kg of body weight a day to support resistance trainingStrong evidence
  • Whole-food meals built on vegetables, berries and a protein source (eggs, fish, poultry, red meat)Personal habit

Kelly & Juliet Starrett

  • About 800 g of fruit and vegetables a day (roughly six cups)Strong evidence
  • Protein about 1.5–2.2 g per kg of body weight; some later talks cite 1.8 g per kgSome evidence
  • Choose affordable protein sources that fit your budget; perfection is not requiredNote

Supplements

Rhonda Patrick

  • Omega-3 (EPA + DHA) about 2 g a day as a starting point; aim for an Omega-3 Index of 8% or more and retest after about 4 monthsSome evidence
  • Take omega-3 with a meal that contains fat; higher doses need care (bleeding risk, atrial fibrillation, medicines)Doctor only
  • Vitamin D with vitamin K2 in the eveningSome evidence
  • Creatine 10 g a day (her own dose, above the usual 3–5 g)Personal habit
  • Multivitamin, magnesium, nicotinamide riboside and PQQ as part of her personal stackPersonal habit

Kelly & Juliet Starrett

No specific guidance in what we reviewed.

Sleep & recovery

Rhonda Patrick

  • Sauna 4–7 times a week, around 20 minutes at roughly 79 °C, based on Finnish cohort dataSome evidence
  • Schedule heat sessions a couple of hours before bedPersonal habit
  • After short sleep, vigorous exercise such as intervals or weights can help blood-sugar controlSome evidence
  • Cold exposure mainly in summer; she does not keep it up in winterPersonal habit

Kelly & Juliet Starrett

  • Aim for at least 7, ideally about 8, hours of actual sleep; track hours asleep for three nightsStrong evidence
  • Keep the same bed and wake times, including weekendsSome evidence
  • Be careful with caffeine and alcohol; keep phones and screens out of the bedroomSome evidence
  • Keep the bedroom cool, dark and quiet, and allow more time in bed than you think you needSome evidence

Stress & mind

Rhonda Patrick

No specific guidance in what we reviewed.

Kelly & Juliet Starrett

  • Breath-hold test as a rough benchmark for tolerance of carbon dioxidePersonal habit
  • Breathe through the nose during the day and in workoutsPersonal habit
  • Optional mouth-taping at night, building up gradually from about 10 minutesPersonal habit
  • Spend about 180 minutes a week outdoorsSome evidence

Brain health

Rhonda Patrick

  • Push hard enough to raise lactate: hard exercise raises BDNF, a growth factor linked to learning and mood (human evidence still early)Some evidence
  • Frequent sauna use is linked with lower dementia risk in Finnish men (observational)Some evidence
  • Keep omega-3 status up; she links it to brain health and ageing markersSome evidence

Kelly & Juliet Starrett

No specific guidance in what we reviewed.

Weak spots to know

Rhonda Patrick

  • The sauna benefits she highlights come mainly from one observational cohort of middle-aged men in eastern Finland. It shows an association, not proof that sauna causes the benefit; women were not included, and commentators noted the reason for the link is unclear (heat, relaxation, lifestyle or social contact).
  • An epidemiology newsletter (The Edge of Epidemiology, 2025) argued that some of her headline numbers, such as vitamin D cutting dementia risk by about 40%, rest on observational studies and overstate what is known; genetic and trial evidence is mixed.
  • She often builds a case from biological mechanisms (e.g. lactate and BDNF, nutrients and serotonin). Several of these ideas are supported mostly by animal or small short-term human studies, as her own episodes acknowledge.

Kelly & Juliet Starrett

  • Several central tests rest on observational data: the sit-and-rise and one-leg balance studies show that people who do poorly die sooner, not that practising the test makes you live longer. Both studies were also in Brazilian cohorts and could not rule out other explanations.
  • Some tests have no validated scoring for the general public; the Starretts themselves describe the breath-hold test as a rough benchmark rather than a lab-grade measure, and practices such as mouth-taping have little evidence behind them.
  • Built to Move deliberately leaves out cardio and strength training; for adults over 50 those remain important for heart health and muscle, so the plan works best as a base layer rather than a complete programme. Kelly's earlier Supple Leopard was criticised by one reviewer for a trial-and-error approach rather than a systematic method.

Build a plan from Patrick, the Starretts 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 Patrick's stylePlan in the Starretts' styleMix both

Questions

What is the main difference between Rhonda Patrick and Kelly & Juliet Starrett?

Their training split differs most in mobility and stability: Patrick about 0%, the Starretts about 60% (our estimate from their published routines). Patrick's signature habit is Sauna 4–7 × a week; the Starretts' is 10 tests, 10 practices.

How much protein do Patrick and the Starretts recommend?

Patrick: ~1.6 g/kg. The Starretts: 1.5–2.2 g per kg.

Whose advice has stronger evidence?

We rate the evidence behind Patrick's protocol higher: strong, against solid for the Starretts.

Do Patrick and the Starretts disagree?

Not directly in what we reviewed. Their differences are in emphasis: patrick puts more of the week into strength: about 30% against 10%.

Can I combine Patrick and the Starretts?

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: Rhonda Patrick · Kelly & Juliet Starrett. Reviewed October 2026.