Can you eat all your calories in one meal? (3 Reasons not to)

In this brief guide, we will answer the question, can you eat all your calories in one meal? We will weigh the pros and cons of eating all your calories in one meal.

Can you eat all your calories in one meal?

You can eat all your calories in one meal, but it can have negative consequences. Eating the entire day’s calories is not only a difficult step but can cause digestive discomfort, sluggishness, and energy crashes. 

What is one meal a day diet?

One meal a day diet is when an individual cram their entire day’s calories into one meal. The lengthy intermittent fasting calls that you fast for around 23 hours and eat for 1 hour only. The meal which people following the diet eat is dinner. 

You will need to reserve at least an hour to fill up the days’ worth of calories. You can not expect to eat even as little as 1000 calories in one sitting. Also, your palate must be colorful. IF you eat chips and candies in the allotted time, then your health-related goals are most likely to backfire. 

How do the effectiveness and health risks weigh when compared to other diet plans?

The 24/0 form of intermittent fasting will work for some but not for others. A good regime for intermittent fasting calls for eating at least two meals a day. According to research, intermittent fasting has tremendous health benefits when kept under 16 hours a day. 

Short-term fasting calls for starvation for 14 to 16 hours, where you are allowed to eat for around 4 to 8 hours in a 24-hour window. Short-term fasting helps to maintain blood sugar and manage type 2 Diabetes. 

Even under the specified conditions, short-term fasting must be carried out for a month at most. Fasting helps to manage obesity and strengthens the immune system. Time-restricted feeding is backed up with research that it helps to treat age-related chronic conditions and stimulate autophagy. Autophagy is a process that gets rid of toxins and metabolites in the body. Hence promotes the overall well-being of a person and keeps many health conditions at bay. 

Can eating one meal a day help you to attain your weight-loss goals?

You will be able to lose weight if you eat only one meal a day. The condition is that you must be calorie-deficit to lose weight. Being calorie-deficit means that you burn more calories than you consume. If your caloric intake is under the number of calories your body needs, you will lose weight. 

The diet would help you to achieve a quick weight-loss result, but there are risks associated with eating all your calories in a single meal. However, fasting for 23 hours a day cannot become a regular daily pattern because of the counter-effects it can cause to you. 

Fasting can make a person more prone to binge-eating. Restrictive diets can backfire easily because it makes the body crave for food. If you deprive the body of what it rightfully deserves, then it can have unfortunate consequences. It will make you feel very hungry throughout the day, give you fatigue, and makes it difficult to concentrate or difficult to perform even an ordinary task. As the blood sugar becomes unsteady and then stays low, it will make you irritable, weak, and dizzy.

What are the ill effects of eating all your calories in one meal?

People who eat one-day-a-meal usually opt for dinner as their only meal of the day. We are aware that skipping breakfast can be bad for health, and this holds even when a person follows a 23:1 diet. Eating breakfast is important because it helps to maintain blood glucose levels and prevent Type 2 Diabetes. 

Another rule that follows is the flexibility that the diet allows you to eat any food regardless of nutritional value. However, this is highly contradictory to a health plan where the only motive must not be to lose weight but also to stay healthy and productive. A calorie-packed meal, where you consume loads of unhealthy calories, can cause you to feel awful both physically and mentally. However, even if you intend to pack your meal with fiber-rich foods like fruits and vegetables, then it is not possible. Fruits and vegetables have very low calories and your body will not permit you to eat the entire day’s serving in one meal. 

Some popular, healthy diet plans require that a person eats small portions of meals throughout the day, and cutting back on saturated fats and processed foods. Exercising regularly is also highly advised to maintain adequate weight. 

In this brief guide, we answered the question, can you eat all your calories in one meal? We weighed the pros and cons of eating all your calories in one meal.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.