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About Us - The Team

Our team

Our amazing team at is made up of Medical Doctors, Registered Dietitians, and Health experts from around the world.  We have been researching the latest and greatest in the Intermittent Fasting world to bring you the most up to date information to help you on your fasting journey!

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Jason Krul

Founder - CEO

Overworked, overstressed, poor diet….For many years I struggled with different ailments, until I discovered the power of intermittent fasting, and it has transformed my life.  

Now I want to dedicate my work to helping others understand, use and feel the benefits of intermittent fasting. It has revitalized my passion for travel, fitness, and so much more!

We wanted to create a community online to help everyone reach better health through intermittent fasting and reach their full potential in life.  Happy Fasting!

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Dr. Rashmi Byakodi

Medical Doctor, Writer

Dr. Rashmi Byakodi is a health and wellness writer who aims to spread awareness about health through her words. With her medical background and a passion for writing, she has been creating health content on various platforms.

Dr. Rashmi believes that with the right knowledge and a healthy lifestyle, we can combat many health issues, and she strives to spread the same through her blog posts.

She has a background in intermittent fasting, and has helped thousands of her patients and people worldwide reach their health goals! LinkedIn Profile


Hayley Harris

Registered Dietitian

Being a Registered Dietitian and nutritional coach, Hayley consults 21 Day Hero on nutritional guidelines and meal plan creation. 

She hopes to inspire others to eat closely to the way that nature intended, capitalizing on the amazing benefits of whole unprocessed foods. Hayley shares her passion for simple healthy eating!  Visit her website!


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Dr. Harshi Dhingra

Medical Doctor

Harshi is a licensed medical doctor with a specialization in Pathology and holds her medical degrees of MBBS and MD Pathology from esteemed institutes in India. She is currently employed as faculty in a medical school with tertiary care hospital and research center.

Harshi has vast experience of over a decade in research, diagnostic, clinical and teaching work and has several publications in indexed peer-reviewed journals. She has a strong interest in medical content research writing and reviewing. You can contact Harshi and see her work on Linkedin, Researchgate and Googlescholar.
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Dr. Dimitar Marinov

Medical Doctor

Dr. Marinov is a medical doctor (MD), who specializes in Nutrition and Dietetics. He graduated from medicine with honors and started pursuing his Ph.D. right away.

Currently, he is an assistant professor at the Medical University of Varna, Bulgaria, teaching medical students about the importance of healthy nutrition, prevention, and health promotion. Dr. Marinov has years of experience as both a physician and scientist in the field of preventive medicine, dieting, and metabolic health.

As a researcher, he has published numerous scientific articles in international peer-reviewed journals. You can learn more about his research or contact him here – LinkedIn Profile.

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Sydney Wills

Registered Dietitian

Sydney Wills is a registered Dietitian with a passion for empowering and educating clients, while working toward their health and nutrition goals. Individualized nutrition care is at the core of her work as she aim to find the best strategies and solutions based on the needs of the individual.

She has experience in writing and content creation in the following areas: mindfulness/ mindful eating, Intuitive Eating, gut health, women’s hormone health, weight management, and cooking.

She has extensive knowledge of intermittent fasting, and the amazing benefits it provides.  LinkedIn Profile

pamela william

Lifestyle/Health/Nutrition Blogger

Pamela Wiliam

For the past eight years, Pamela has been crafting content across many fields, especially when it comes to health and wellness. She’s got a soft spot for intermittent fasting—a topic she’s explored a lot, both on paper and in her own life. When she talks or writes about it, you can bet she’s giving you the real deal, backed by her own journey and plenty of research. So, if you’re looking for a genuine take on health topics, Pamela’s your go-to.  LinkedIn Profile

How we do it

Our Intermittent Fasting
21-day Meal Plans

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Our meal plans have been carefully crafted with Registered Dietitian’s (RD) guidance, to ensure optimal nutritional balance for any age, gender and activity level. 

All our meal plans are designed for Intermittent Fasting lifestyle. 

Our Intermittent Fasting
21-day challenges

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Our 21-day challenges are created to provide you all the necessary information and support to start and establish an intermittent fasting lifestyle. 

With daily tips, reminders and a supportive community, you will be able to lose weight and feel healthier in just 21 days.