The Human Upgrade: Biohacking for Longevity & Performance15 Feb

Low Testosterone Starts In Your Eyes (Avoid This Before Bed) : 1416

https://truedark.com/discount/DAVETUBE

Most people believe testosterone declines simply because of age. That explanation is easy, familiar, and wrong. Testosterone is not primarily controlled by how hard you train, how clean you eat, or how stressed you feel during the day.

It is controlled by what happens in your brain at night. This video explains how sleep architecture works, why deep sleep is the foundation of hormone production, and how common nighttime habits flatten testosterone signals at the source.

It also walks through practical ways to restore proper sleep timing, protect deep sleep, and rebuild the hormonal rhythm the body depends on.

Timestamps:

00:00 - Why testosterone decline is not just about aging

01:12 - When testosterone is actually made in the body

01:37 - Deep sleep explained (slow-wave sleep / N3)

02:14 - “Fake aging”: why you feel older than you are

03:35 - Why 8 hours of sleep can still fail you

05:39 - How to protect deep sleep

09:45 - How light at night confuses your brain’s clock

12:11 - How to protect your eyes and sleep at night

14:20 - What happens when sleep is finally fixed

Thank you to our sponsors!

Screenfit | Get your at-home eye training program for 40% off using code DAVE at https://www.screenfit.com/dave.
EMR-Tek | https://www.emr-tek.com/DAVE and use code DAVE for 40% off.

Resources:

• Get My 2026 Biohacking Trends Report: https://daveasprey.com/2026-biohacking-trends-report/

• Dave Asprey's Latest News | Go to https://daveasprey.com/ to join Inside Track today.

• Danger Coffee: https://dangercoffee.com/discount/dave15

• My Daily Supplements: SuppGrade Labs (15% Off)

• Favorite Blue Light Blocking Glasses: TrueDark (15% Off)

• Dave Asprey’s BEYOND Conference: https://beyondconference.com

• Dave Asprey’s New Book – Heavily Meditated: https://daveasprey.com/heavily-meditated

• Join My Substack (Live Access To Podcast Recordings): https://substack.daveasprey.com/

• Upgrade Labs: https://upgradelabs.com

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