Span Blog: The science of longevity fitness

Eight Sleep & Span are joining forces – read the announcement

Why Span is joining the Eight Sleep team

Patrick Samy

How much exercise is too much for non-athletes?

Adam Bataineh, MD

Are standing desks better for you? Not always

Adam Bataineh, MD

A longevity doctor reviews Athletic Greens: a substitute for vegetables?

Adam Bataineh, MD

Do you really need 10,000 steps a day?

Peter Tierney, PhD

De-stiffening your arteries? How arteries harden with age and what to do about it

Adam Bataineh, MD

The surprising benefits of salt supplementation for performance

Adam Bataineh, MD

What is Long COVID and how can we accelerate recovery from it

Adam Bataineh, MD

Why we lose flexibility with age and what to do about it

Adam Bataineh, MD

The interesting science behind long walks

Adam Bataineh, MD

Why the holidays throw us off track and why they don't have to

Adam Bataineh, MD

How to maximise the benefits and minimise the downsides of caffeine consumption

Peter Tierney, PhD

6 ways to exercise more consistently in the new year

Adam Bataineh, MD

Deep dive into glucose variability for non-diabetics

Adam Bataineh, MD

You’re probably wrong about how much sleep you need

Adam Bataineh, MD

Which health wearable to treat yourself with this holiday season

Adam Bataineh, MD

Location matters with wearables, but why?

Ryan Kraudel

Oura Ring Generation 3 review: a biowearables doctor breaks it down

Adam Bataineh, MD

The ultimate guide to REM sleep

Adam Bataineh, MD

How your sleep wake cycle influences your performance

Adam Bataineh, MD

Drinking too much water might be impacting your sleep

Adam Bataineh, MD

The ultimate guide to resetting your sleep-wake cycle

Adam Bataineh, MD

The most important marker of sleep quality that no one is talking about

Adam Bataineh, MD

The ultimate guide to good posture

Adam Bataineh, MD

Whoop 4.0 vs Whoop 3.0: should you upgrade? A biowearables doctor breaks it down

Adam Bataineh, MD

How competitive skater Jeanette Cajide reversed aging and improved performance

Jeanette Cajide

HRV: the ultimate marker for health and longevity

Adam Bataineh, MD

The 4 most common mistakes people make when interpreting HRV

Adam Bataineh, MD

How accurate are my sleep metrics? Here’s the ultimate guide to sleep monitoring with wearables

Adam Bataineh, MD

What’s the best way to improve VO2 max

Adam Bataineh, MD

Why measuring your total protein intake can be misleading

Ban Khadiri, PharmD

Resting heart rate and your health

Marah Shaikh Yousef, MD

Your gut microbiome affects your mental fitness

Rachel Lett, RNutr

How breathing exercises can improve heart rate variability

Marah Shaikh Yousef, MD

Has your HRV changed after receiving the COVID-19 vaccine? This might be why

Adam Bataineh, MD

The ultimate guide to melatonin and sleep

Ban Khadiri, PharmD

Why a surprisingly small amount of alcohol might affect heart rate variability (HRV)

Adam Bataineh, MD

How to boost your mitochondrial health

Adam Bataineh, MD

Will Tom Brady's diet make me a superhuman?

Rachel Lett, RNutr

Navneeta, busy mum who restored her health & longevity

Rachel Lett, RNutr

Avtar lost 3 stone & no longer feels hungry

Rachel Lett, RNutr

Guide to intermittent fasting

Rachel Lett, RNutr

What is PCOS?

Rachel Lett, RNutr

Guide to Blood Glucose Measurements

Adam Bataineh, MD

7 Types of Intermittent Fasting, Explained

Rachel Lett, RNutr