Cold exposure

Cold exposure can boost mitochondrial health and metabolism, but moderation and adaptation are key.

Strong consensus

For cold therapy.

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

The strongest voice

“I use cold something called cold thermogenesis... in three months I lost 77 pounds”

a molecular biology PhD · source video · 00:10:00

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 recommend
“Cold thermogenesis can be dangerous if done excessively or without adaptation, especially for cardiac conditions.”

a molecular biology PhD · source video · 00:07:30

a board-certified cardiologist against
“Safety is paramount; signs like dizziness, lightheadedness, or blue/white hands indicate intolerance and risk of harm.”

a board-certified cardiologist · source video · 00:46:30

a registered holistic nutritionist neutral
“Cold therapy is uncomfortable during it, but feel amazing, refreshed and happy after.”

a registered holistic nutritionist · Instagram reel

a licensed naturopathic physician recommend
“Cold exposure signals the body to create new mitochondria and burn more fat”

a licensed naturopathic physician · Instagram reel

a performance scientist with a psychology PhD recommend
“Cold immersion is a behavior to increase autonomic nervous system capacity and resilience.”

a performance scientist with a psychology PhD · Instagram reel

a performance scientist with a psychology PhD recommend
“Cold exposure is part of the ultimate well-being stack to re-enter the world with firmer persuasion.”

a performance scientist with a psychology PhD · Instagram reel

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

Red and infrared light

Red and infrared light support mitochondrial function and skin resilience.

Strong consensus

“the red spectrum of light penetrates into the mitochondria kicks nitric oxide off and then the electrons can flow through”

a board-certified cardiologist · source video · 00:08:00

Infrared light therapy

Infrared light therapy is widely valued for supporting mitochondria and relaxation.

Strong consensus

“infrared light which can penetrate 8cm into the body can help to clear this out of the way so that your mitochondria can carry on making ATP and water”

a molecular biology PhD · TikTok video

Infrared exposure

Infrared exposure helps support healthy blood flow and cellular energy production.

Strong consensus

“The main things are sunlight exposure, infrared light, anything that's going to build charge in your body is going to help build the structured water and that’s going to prevent this clotting response.”

a molecular biology PhD · source video · 00:00:10