What is Intermittent Fasting? A Complete Guide | CoachedByAnirudh

You wake up at 7:00 AM, immediately rush to your laptop to answer emails, and grab a sugary biscuit or a quick chai just to keep your energy up for the first meeting of the day. By 3:00 PM, you are hit by a massive energy crash, reaching for more snacks to survive the afternoon slump. This cycle of constant grazing is exactly what prevents many busy professionals from seeing the fat loss results they deserve. If you have ever wondered what is intermittent fasting and whether it could be the solution to your erratic eating habits, you are not alone. It is one of the most searched fitness topics globally, yet it remains one of the most misunderstood tools in the nutrition world.

The reason so many people struggle with their weight isn't necessarily a lack of willpower, but a lack of structure. Intermittent fasting is often viewed as a scary starvation tactic or a magical fat-burning pill, but in reality, it is simply a tool for time-restricted eating. Many of my clients, from IT developers to school teachers, find that the traditional 'six small meals a day' approach is impossible to maintain with a busy schedule. This is where understanding what is intermittent fasting becomes a game-changer, as it shifts the focus from 'what' you are eating to 'when' you are eating, making it much easier to manage a calorie deficit without feeling like a slave to your meal prep containers.

At its core, intermittent fasting is an eating pattern that cycles between periods of fasting and eating. It does not prescribe which foods you should eat, but rather when you should eat them. When you are in a fasted state, your body doesn't have a recently consumed meal to use as energy, so it is more likely to pull from stored body fat. Physiologically, this process helps lower insulin levels and increase growth hormone secretion, creating an environment that is highly conducive to fat loss and cellular repair. It is a natural biological process that our ancestors practiced out of necessity, but we can use it strategically today to improve our metabolic health.

To understand the science further, we have to look at insulin. Every time you eat, your body releases insulin to help process the nutrients. High insulin levels effectively shut down fat burning. By extending the period where your insulin levels are low—which is what happens during a fast—you give your body a much longer window to access stored fat for fuel. This is particularly beneficial for professionals who sit for long hours and don't have the opportunity to burn off constant glucose spikes throughout the day. It simplifies the day by reducing the number of decisions you have to make about food, which reduces decision fatigue.

The most popular way to start is the 16/8 fasting method, where you fast for 16 hours and consume all your calories within an 8-hour window. For a typical IT professional, this might mean skipping breakfast, having your first meal at 12:00 PM, and finishing your last meal by 8:00 PM. During the fasting window, you can and should consume plenty of water, black coffee, or plain green tea. These non-caloric beverages help suppress hunger and keep you hydrated without breaking the fast. The goal is to keep your digestive system at rest and your insulin levels stable until your feeding window opens.

When you finally break your fast, the quality of your nutrition still matters. You cannot eat 4,000 calories of junk food in 8 hours and expect to lose weight. I always recommend that my clients break their fast with a high-protein meal combined with fiber and healthy fats. For example, a bowl of Greek yogurt with nuts and berries or a grilled chicken salad with avocado provides the satiety needed to prevent overeating later in the day. If you are a vegetarian, a paneer stir-fry with plenty of vegetables is an excellent way to get your protein in while keeping your blood sugar stable after a long fast.

Common mistakes often include 'dirty fasting' or over-compensating during the eating window. Dirty fasting refers to adding cream, sugar, or MCT oil to your coffee, which triggers an insulin response and defeats the primary purpose of the fast. Another mistake is being too aggressive too soon. If you are used to eating every three hours, jumping straight into a 20-hour fast will likely lead to a binge. Start with a 12-hour window and gradually increase it as your body becomes more fat-adapted. Consistency is far more important than the intensity of the fast in the first few weeks.

In my coaching practice at CoachedByAnirudh, I have seen how this structure transforms lives. One client, a senior software engineer, was struggling with a 100kg starting weight and constant brain fog. We implemented a 16/8 protocol that allowed him to focus entirely on deep work in the mornings without worrying about breakfast. By the time 1:00 PM rolled around, he had already completed his most difficult tasks and could enjoy a large, nutrient-dense lunch. This small shift in timing, combined with a slight calorie deficit, helped him drop 8kg in the first 12 weeks while actually increasing his productivity at work.

My approach is never about restriction for the sake of suffering; it is about finding a lifestyle that fits your unique demands. For homemakers or teachers who are on their feet all day, we might adjust the window to be slightly shorter, perhaps 14/10, to ensure they have enough energy for their physical tasks. We focus on bio-feedback—monitoring hunger, sleep quality, and energy levels—to ensure the fasting protocol is serving the client, not the other way around. If a protocol makes you miserable or obsessed with the clock, it isn't the right one for you.

One of the biggest myths regarding what is intermittent fasting is the fear of muscle loss. People often worry that if they don't eat every few hours, their body will start 'eating' its own muscle. Science tells us the opposite. As long as you are hitting your total daily protein requirements and engaging in resistance training, your muscle mass is well-protected. In fact, the increase in growth hormone during a fast can actually help with muscle preservation. Another myth is that it ruins your metabolism. Short-term fasting has actually been shown to slightly increase metabolic rate due to the release of norepinephrine.

How to start intermittent fasting if you have a social life? This is a question I get frequently. The beauty of this tool is its flexibility. If you have a dinner party on Saturday night, you can simply shift your eating window later that day. You don't have to be perfect; you just have to be consistent over the long term. If you miss your window one day, don't throw in the towel. Just resume your normal schedule the next day. It is a tool for your life, not a cage that you have to live inside. This flexibility is why so many of my clients find success with it compared to rigid, traditional diets.

If you are looking for more than just a timing strategy, you might find that combining this with structured programming and a tailored nutrition plan is the key to a total body transformation. Many people find that they hit a plateau with fasting alone because they aren't sure how to adjust their calories or their workouts as they get leaner. This is where looking at real-world transformation stories can be inspiring, as they show what is possible when you combine the right timing with the right intensity in the gym and the right macronutrient balance.

Ultimately, what is intermittent fasting if not a way to regain control over your relationship with food? It teaches you the difference between actual physiological hunger and emotional boredom. By learning to sit with a little bit of hunger in the morning, you build mental toughness that carries over into your career and your personal life. Whether you want to lose 5kg or 20kg, the principles remain the same: manage your energy, prioritize your protein, and stay consistent with your movement. If you can do those three things, the results will follow inevitably.

If you are feeling overwhelmed by all the conflicting information online and want a clear, science-backed roadmap tailored to your busy life, I am here to help. You don't have to do this alone or spend hours researching. You can reach out to me directly by sending a DM on Instagram at @the.lion.kid or by emailing coachedbyanirudh@gmail.com. Let's discuss your goals and see if we can build a sustainable plan that gets you lean and strong without sacrificing the foods you love or the time you need for your career.