Caffeine

The panel is split on caffeine, especially for sleep and stress.

Genuinely contested

For caffeine consumption.

Sourced from the doctors, PhDs and clinicians behind Entrain. Updated

Both sides, in their own words

Our sources differ. Compare their views and the context behind each one.

One side

“caffeine depends if you're a fast or slow metabolizer of caffeine if you're a slow metabolizer no caffeine or very minimal and stop before 9:00 a.m.”

a board-certified cardiologist · source video · 00:38:00

The other

“Cortisol peaks around half past six to wake you up and adding caffeine on top of cortisol, which is a stress hormone, can increase stress.”

a molecular biology PhD · source video · 00:00:25

In their own words

One faithful sentence per source, linked to the moment it was said; quiet chips mark where money is involved.

a molecular biology PhD against
“Cortisol peaks around half past six to wake you up and adding caffeine on top of cortisol, which is a stress hormone, can increase stress.”

a molecular biology PhD · source video · 00:00:25

a board-certified cardiologist against
“Caffeine affects blood pressure which might affect the accuracy of the pulse wave analysis test.”

a board-certified cardiologist · source video · 00:00:10

a registered holistic nutritionist against
“Caffeine can add to overall stress and may need to be reduced if you feel overstimulated.”

a registered holistic nutritionist · source video · 00:01:15

a board-certified internal medicine doctor against
“Over about 400 mg a day of caffeine is probably going to be too much.”

a board-certified internal medicine doctor · source video · 00:00:05

a Harvard-trained gynecologist against
“Reducing caffeine can improve gut health and reduce anxiety, especially during stressful periods like the school year.”

a Harvard-trained gynecologist · source video · 00:49:30

a registered nutritional therapist against
“These substances act as diuretics or bind minerals, causing mineral depletion.”

a registered nutritional therapist · Instagram post

Worth discussing with your GP, especially if you take medication or are pregnant. Entrain describes what is publicly taught; it does not prescribe.

Journaling

Journaling can help process emotions, reflect on experiences, and support overall mental health.

Strong consensus

“jamie pennebaker's work i really like the idea of the importance of journaling the importance of getting your emotions out you know reflecting on the experience on paper or electronically”

a licensed acupuncturist and clinician-educator · source video · 00:26:30

Social connection

Social connection is foundational for well-being and supports both mental and physical health throughout life.

Strong consensus

“it's so important that we do spend time with people we love and trust and we build those relationships through through having meals with others through going to social events”

a licensed acupuncturist and clinician-educator · source video · 00:01:30

Parasympathetic activation

Prioritizing rest and digest states helps balance stress and recovery.

Strong consensus

“We actually have to actively pursue a more parasympathetic state in order to achieve it today I think it's kind of an unprecedented time for our species”

a Princeton-trained molecular biology PhD · source video · 00:55:30