Looking for nutritional therapy instead?
I also work as a Registered Nutritional Therapist, offering personalized nutritional therapy both after fasting and as a completely standalone service.
What does one-to-one fasting coaching involve?
Water fasting is simple in principle. Longer fasts are rarely quite so simple in practice.
Questions can arise before the fast even begins: how to prepare, how long to fast, whether medication or an existing health condition changes the picture, and what practical arrangements need to be made.
Once the fast is underway, other questions appear. Energy levels change. Symptoms come and go. Sleep, digestion, hydration, mood and physical sensations can all fluctuate. Sometimes everything develops exactly as expected; sometimes the original plan needs to be reconsidered.
The purpose of coaching is not simply to encourage you to keep going.
It is to give you an experienced point of reference throughout the process: someone who knows prolonged fasting well, can help put what you are experiencing into context, and can help you decide what makes sense as the fast develops.
A longer fast is not automatically a better fast. The important question is what is appropriate for the person actually fasting.
Can’t I Just Fast on My Own? Do I Really Need Coaching?
Not necessarily. Many people manage shorter fasts independently, particularly if they are healthy, experienced and already know how their body responds.
Coaching becomes more useful with longer fasts, first extended fasts, complex health histories, medication, previous difficulties, or uncertainty around refeeding.
People often come to me because they are unsure how to interpret what is happening during a fast, whether the original plan still makes sense, or how best to manage the return to food.
For some, a single consultation is enough. Others prefer regular support throughout the fast and refeeding period.
The longer or more complex the fast, the more valuable experienced support can become.
Coaching can help with:
- preparation before the fast
- deciding on an appropriate fasting length
- questions and changes arising during the fast
- avoiding common fasting and refeeding mistakes
- interpreting information found online, including contradictory advice
- adapting the original plan where necessary
- returning to food carefully afterwards
- having regular support during a physically and psychologically demanding process
Start with a Consultation
Single Consultation — $140 USD
Every full coaching relationship begins with a 60-minute individual online consultation, but you can also book the consultation completely on its own.
We can use the session to discuss your particular situation, including:
- previous fasting experience
- the fast you are considering
- your reasons for fasting
- relevant health history and medication
- preparation
- possible fasting length
- concerns arising during a fast already underway
- refeeding
- whether full coaching would actually be useful for you
The consultation also includes email follow-up for immediate questions arising afterwards.
If you decide to continue into full coaching, the $140 consultation fee is deducted from the full coaching price.
There is no obligation to continue.
PREMIUM CONSULTATION — $220
Already fasting and need more urgent help?
A 60-minute consultation can usually be arranged within 24–48 working hours, with short-term text support afterwards while the immediate issue is being resolved.
Full Coaching for Any Length of Water Fast
If you decide to continue after your consultation, full coaching provides regular one-to-one support from preparation through the fast and into refeeding.
BEFORE THE FAST
We use the consultation to establish the initial plan and look at the practical preparation for the fast ahead.
This includes your previous experience, health history, aims, timing, fasting length and any individual factors that may affect the way you approach the fast.
DURING THE FAST
Regular video check-ins
You have 15–20 minute video calls each day, except Wednesdays and Sundays. On Wednesdays, support continues through live chat.
These conversations provide an opportunity to discuss how the fast is developing, raise questions and consider whether anything in the original plan needs to change.
Unlimited email and text support
Questions do not always wait for the next scheduled call.
You can contact me by email or message as issues arise during the fast.
Emergency contact access
Full coaching clients also receive a direct contact number for urgent fasting-related concerns.
The purpose of this support is not to push you towards a predetermined number of days. Sometimes the right decision is to continue; sometimes the plan needs to be adapted.
REFEEDING IS PART OF THE COACHING
A fast does not end simply because the last fasting day is over.
The transition back to food is an important part of the process, particularly after a longer fast, and initial refeeding support is included in every full coaching package.
As a general guide, the supported refeeding period lasts approximately one third of the length of the fast, although the actual approach depends on the individual fast and how you respond.
There is no additional coaching charge when the fasting period ends and refeeding begins.
FULL COACHING CLIENTS ALSO RECEIVE PRACTICAL FASTING GUIDES COVERING:
• Products & Procedures – Essentials for comfort & safety
• How to Break a Water Fast – Step-by-step refeeding guide
• Dealing with Detox Symptoms – How to navigate issues including nausea and headache
Full Coaching Fees
Every full coaching package includes support during the fast and through the initial refeeding period afterwards.
Example: For a 14-day fast, payment covers both the fast itself as well as about five days of refeeding afterwards. No further payments are required once the fast has ended and refeeding begins.
If you have already paid for your initial consultation, the $140 consultation fee is deducted from the prices below.
| Length of fast | Price (includes the refeeding period) |
|---|---|
| 3-day fast (+ refeeding) | $350 |
| 5-day fast (+ refeeding) | $400 |
| 7-day fast (+ refeeding) | $500 |
| 10-day fast (+ refeeding) | $650 |
| 14-day fast (+ refeeding) | $850 |
| 21-day fast (+ refeeding) | $1200 |
| 28-day fast (+ refeeding) | $1500 |
| 30-day fast (+ refeeding) | $1600 |
| 40-day fast (+ refeeding) | $2000 |
| Other lengths of fast | Price to be agreed |
* PRICE INCLUDES BOTH THE FAST AND THE REFEEDING PERIOD AFTERWARDS
* Payment plans available
What happens after refeeding?
For some people, our work ends when the fast and initial refeeding period are complete.
Others want to use the experience as a starting point for more substantial work on their everyday diet.
As a Registered Nutritional Therapist, I also offer personalized nutritional therapy for clients who want to continue working on nutrition after fasting.
Nutritional therapy is also available entirely independently of fasting.
Meet Dr. Tallis Barker
Dr Tallis Barker, D.Phil., NT.Dip., Nat.Dip. has more than fifteen years of personal fasting experience and has worked with over 1,000 clients internationally, supporting water fasts ranging from 3 to 40 days.
He is a registered Nutritional Therapist with the Federation of Nutritional Therapy Practitioners and a registered Associate Naturopath with the Society of Naturopaths.
His work in extended fasting also includes published case research, teaching and international speaking.
Who do I work with?
Some clients come to me for their first extended fast. Others have already fasted independently and want more experienced support for a longer or more demanding fast.
Many also come with persistent or complex health histories.
Over the years I have worked with clients living with digestive and gut problems, SIBO, post-viral illness and Long Covid, autoimmune and inflammatory conditions, chronic fatigue, cancer, metabolic and hormonal concerns, reproductive health problems and a wide range of other long-standing health issues.
These situations need to be considered individually. The name of a diagnosis alone does not tell us whether fasting is appropriate, what length of fast makes sense, or how a particular person will respond.
For that reason, I do not use a single standard fasting protocol for everyone.
Water fasting coaching does not replace medical diagnosis or treatment, and medical input may be necessary in some circumstances.
Testimonials:
Frequently Asked Questions
Do I need coaching for every water fast?
No.
Someone who is healthy, experienced and undertaking a relatively short fast may feel perfectly comfortable fasting independently.
Coaching becomes particularly useful for longer fasts, first extended fasts, more complex health histories, previous difficulty with fasting or refeeding, or simply when you want an experienced point of reference available throughout the process.
How long should I fast?
There is no single ideal length.
Previous fasting experience, health history, medication, nutritional status, body composition, your reasons for fasting and how you respond during the fast all matter.
I therefore look at fasting length individually rather than applying the same protocol to everyone.
Can I book just one consultation?
Yes.
The $140 consultation can be used entirely as a standalone session. There is no obligation to continue into full coaching.
If you subsequently decide to continue, the consultation fee is deducted from the full coaching cost.
What does full coaching include?
Full coaching includes preparation, regular video check-ins throughout the fast, unlimited email and text support, emergency contact access and support through the initial refeeding period.
Can I contact you if I have already started fasting?
Yes.
People sometimes contact me after beginning a fast independently because questions or difficulties have arisen.
For urgent situations, a Premium Consultation can usually be arranged within 24–48 working hours.
Can you tell me whether fasting is appropriate for my health condition?
That depends on the individual situation.
A consultation allows us to look much more closely at your health history, current circumstances and what you are hoping to achieve. Where medical conditions, medication or other relevant risks are involved, medical input may also be necessary.
What happens after the fast?
Support through initial refeeding is included in full coaching.
Once refeeding is complete, you can finish there or continue working with me through personalized nutritional therapy if you want longer-term support with your diet.
Do you work internationally?
Yes. Consultations and full coaching are provided online, and I work with clients worldwide.
Prefer a self-guided short fast?
If you are considering a 3-day water fast and do not need one-to-one coaching, Tallis’s online course provides structured guidance through preparation, the fast itself and refeeding.
Check out the
Complete a 3-day water fast
Online Course!
This video + pdf bundle provides you with all you need to know in order to safely, successfully and smoothly carry out your first 3-day water fast. If you already have a little experience, there are plenty of additional tips to help you go deeper into water fasting.
Ask Dr. Tallis
Have a general question about water fasting, preparation or refeeding?
You are welcome to leave your question in the comments below and I will answer when I can.
Answers in the comments provide general educational information rather than individual medical or fasting assessment. Questions involving medication, diagnosed conditions or individual suitability for prolonged fasting may require a consultation and, where appropriate, medical advice.
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