
I’m continuously adding new videos that explore the many dimensions of water fasting—how it works, why it’s powerful, and what happens in the body during a fast. Each video dives into a specific topic, from the science behind fasting to the emotional and metabolic shifts it can trigger.
You’ll also find detailed insights into how different health conditions respond to water fasting, helping you better understand if and how fasting could support your personal healing journey. Whether you’re curious, preparing for a fast, or already experienced, these videos are designed to inform, empower, and inspire.
Conference Lectures and Panel Discussions
The Real Truth About Health Conference, 2025

Healing chronic illness with water fasting: the ultimate holistic journey
Dr. Tallis Barker explains how water fasting can profoundly heal chronic illness and promote holistic well-being. Learn about the transformative potential of fasting for physical recovery, emotional clarity, and spiritual rejuvenation.
Deep Dives & New Explorations
The latest videos unpacking complex fasting topics—from SIBO and muscle loss to Tallis’s personal 30-day journey.

How does fasting lower blood pressure?
This video explains how and why you can use water fasting to permanently reduce high blood pressure. Extra focus is given to getting off blood pressure meds.

Does fasting cause muscle loss?
This video separates fact from fiction, relying on clinical observation and physiological knowledge – so you can reach your own conclusion.

This video explores how water fasting can safely heal SIBO, focussing on the specific challenges involved and how to overcome them.

Ketosis: water fasting vs. ketogenic diets
This video explores why ketosis during a water fast is so different from that on a keto diet – with huge implications for detox and healing.
My 30-day water fast

This video introduces my recent 30-day water fast: a deep experience of personal growth, healing and closure. The full article which accompanies it goes into much further detail about how a whole month of fasting actually felt.
Core Questions, Clear Answers
The essential questions everyone asks—like “Is fasting safe?” or “Can I keep working?”—with grounded, expert insight.
Note: These videos are all accompanied by a full text article:

Many people are convinced that water fasting must be dangerous. This video takes a look at all the facts, so you can make up your own mind.

Can I work during a water fast?
This video addresses the potential problems of continuing your job as usual during a water fast, and covers (1) what to expect and (2) what to do about it.

Can I work out during a water fast?
A lot of people want to work out during a water fast. If you’re thinking about it too, watch this video first – before you damage your body in the process!

Unfortunately, fasting for weight loss often ends in failure – and sometimes even leads to weight gain afterwards. This video takes a look at the key issues for success.

How are water and juice fasts different?
This video takes a look at how water fasts are different from juice fasts, and discusses the advantages and disadvantages of each.

Water fasts vs dry fasts: how are they different?
Water fasts and dry fasts work differently on the body, so understanding the reasons why you’re fasting can help you to decide which kind of fast is best for you.

Does healing continue after a fast?
This video looks at the way that the healing initiated during a water fast can actually continue long after the fast ends.
