Dietitian Avni Kaul Shares 6 Best Ways to Do Intermittent Fasting

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By Dietitian Avni Kaul — Gold Medalist, M.Sc. Food & Nutrition, Lady Irwin College, University of Delhi | Founder, Nutri Activania

India’s Top Dietitian Sheds Light on Intermittent Fasting

Intermittent fasting has gained significant popularity as an effective approach to weight loss and overall health improvement. Renowned weight loss Dietitian Avni Kaul offers valuable insights into the best ways to implement intermittent fasting. By following these expert tips, individuals can optimize their fasting routine and reap the numerous benefits associated with this eating pattern.

What are the 6 types of intermittent Fasting

  • Fast for 12 hours a day
  • Fasting for 16 hours
  • Fasting for 2 days a week
  • Alternate day fasting
  • A weekly 24-hour fast
  • The Warrior Diet

What exactly are 12 hours a day fasting?

Fast for 12 hours a day – The 12-hour fasting method is a straightforward approach to intermittent fasting. To follow this diet, one simply needs to establish and maintain a 12-hour fasting window every day. Research suggests that fasting for 10 to 16 hours prompts the body to utilize stored fat for energy, resulting in the production of ketones and potential weight loss. This fasting plan is particularly suitable for beginners due to it’s relatively short fasting window, the inclusion of sleep time, and the ability to consume the same number of calories daily. By fasting between 7 p.m. and 7 a.m., individuals can have dinner before 7 p.m., fast overnight during sleep, and have breakfast at 7 a.m.

What is the meaning of 16 hours a day fasting?

Fasting for 16 hours – The 16:8 method, also known as the Leangains diet, involves fasting for 16 hours a day and leaving an 8-hour eating window. It is an extension of the 12-hour fast and may be suitable for individuals who didn’t experience desired benefits with the shorter fasting period. During the 16:8 fast, men fast for 16 hours, while women fast for 14 hours. Typically, individuals finish their evening meal by 8 p.m. and then skip breakfast, not eating again until noon. A study conducted on mice following an 8-hour feeding window demonstrated protection against obesity, inflammation, diabetes, and liver disease, even when consuming the same total number of calories as mice with unrestricted eating times.

What do the 2 days a week fasting refer to?

Fasting for 2 days a week – The 5:2 diet, also known as the Fast diet, involves eating a regular, healthy diet for five days a week and reducing calorie intake on the remaining two days. Typically, males consume 600 calories and females consume 500 calories on fasting days. Individuals usually schedule their fasting days non-consecutively, such as on Mondays and Thursdays, with at least one non-fasting day in between. Limited research on the 5:2 diet indicates that it can lead to weight loss and improvements in insulin levels and sensitivity. A small-scale study involving overweight women showed significant weight and fat loss during the fasting period, but measurements returned to baseline after five days of normal eating.

What to do for an alternate day of fasting?

Alternate-day fasting – Alternate-day fasting involves fasting every other day, and there are different variations of this plan. Some individuals completely avoid solid foods on fasting days, while others consume up to 500 calories. On feeding days, people often eat without restrictions. Research suggests that alternate-day fasting is effective for weight loss Dietitian Avni Kaul and heart health in both healthy and overweight adults. In a study, participants lost an average of 5.2 kilograms (11 pounds) over a 12-week period. However, alternate-day fasting is an extreme form of intermittent fasting and may not be suitable for beginners or individuals with certain medical conditions. Long-term adherence may also pose challenges.

How to follow the weekly 24-hour fast?

A weekly 24-hour fast – The Eat-Stop-Eat diet involves fasting completely for 1 or 2 days a week. During the fasting period, which lasts for 24 hours, individuals consume no food but can have calorie-free drinks like water and tea. On non-fasting days, regular eating patterns are resumed, allowing for unrestricted food choices. While a 24-hour fast can be challenging and may initially cause fatigue, headaches, or irritability, these effects often lessen as the body adapts. It is recommended to try shorter fasting periods, such as 12 or 16 hours, before transitioning to a full 24-hour fast.

What Does the Warrior Diet Mean?

The Warrior Diet – The Warrior Diet is an intense form of intermittent fasting characterized by a 20-hour fasting window, during which only a small amount of raw fruits and vegetables are consumed, followed by a 4-hour eating window focused on one large meal at night. It is often preferred by those who have already experimented with other fasting methods. Proponents argue that this eating pattern aligns with our natural circadian rhythms. However, adhering to strict guidelines on meal timing and content can be challenging, and there is a risk of inadequate nutrient intake, potentially impacting digestive, immune, and cancer-related health.

Important Disclaimer & Medical Policy

This content is for informational and educational purposes only. It does not constitute medical or dietary advice. Please consult Dietitian Avni Kaul or a qualified healthcare professional before making any changes to your diet or nutrition plan.

Picture of Avni Kaul: Dietitian & Nutritionist in Delhi NCR

Avni Kaul: Dietitian & Nutritionist in Delhi NCR

About the Author: Dietitian Avni Kaul

Avni Kaul is a Gold Medalist nutritionist holding a Master's degree in Food and Nutrition from Lady Irwin College, University of Delhi. With 12+ years of clinical experience and 15,000+ clients, she is the founder of Nutri Activania — Delhi's leading dietitian practice. She specialises in weight management, PCOS, thyroid disorders, diabetes, and pregnancy nutrition.

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