The Cunningham5 equation [RMR = 500+22*{kg of free fat mass (FFM)}] gained popularity for use with able-bodied athletes after studies indicated that this equation provided the most accurate REE estimate when compared to indirect calorimetry able measurements of female and male endurance athletes.

The United States government states that the average man needs 2,700 kcal per day and the average woman needs 2,200 kcal per day. Not everybody needs the same number of calories each day. People have different metabolisms that burn energy at different rates, and some people have more active lifestyles than others.

The Schofield Equation is a method of estimating the basal metabolic rate (BMR) of adult men and women published in 1985. This is the equation used by the WHO in their technical report series….Men:

3.4. Among the pre-existing equations, the Schofield equation provided the highest percentage of accurate prediction with 59.1%, 18.7% overprediction, and 22.2% underprediction.

The Henry equation is the recognised energy estimation calculator in accordance with the British Dietetic Association. To estimate your requirements, factor this simple calculation for your age: Male: Aged 18-30 >>>>> 16.0 x weight (kg) + 545 = ……..

BMR formula There are 2 formulae used to calculate BMR, in [kcal / 24hrs] for men and women respectively: BMR for Men = 66.47 + (13.75 * weight [kg]) + (5.003 * size [cm]) − (6.755 * age [years]) BMR for Women = 655.1 + (9.563 * weight [kg]) + (1.85 * size [cm]) − (4.676 * age [years])

How to calculate your daily calorie needs

1. Step 1: Find your body weight in kilograms (if you live in the US, just divide your weight in pounds by 2.2 to get your weight in kilograms).
2. Step 2: Multiply your weight in kilograms by 0.9 if you are a woman or 1.0 if you are a man.
3. Step 3: Multiply by 24.

Equation to Calculate Your BMR

1. Men: BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) – (5.677 x age in years)
2. Women: BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) – (4.330 x age in years)

What is my average BMR? Most men have a BMR of about 1,600 to 1,800 kCals a day. Most women have a BMR of 1,550 kCals a day. But this is variable.

In reality, your body responds to eating below your BMR the same way it responds to calorie restriction of any sort—it simply breaks down more body fat to keep your organs supplied with energy. Thus, there’s nothing inherently bad or unhealthy about eating below your BMR.

A 1,200-calorie diet is much too low for most people and can result in negative side effects like dizziness, extreme hunger, nausea, micronutrient deficiencies, fatigue, headaches, and gallstones ( 23 ). Furthermore, a 1,200-calorie diet can set you up for failure if long-term weight loss is your goal.

While 1,200 is the minimum level of calories that the average person can survive on without the body going into starvation mode, that does not mean it is healthy, she told The Independent.

The Bottom Line. The 600 calorie diet is an alternate day fast that has been shown to help people lose weight. It is a fantastic way to lose weight gradually, and it is also a great stepping stone to learning how to live a more healthy life.

Mountains of evidence show that people who are obese can benefit from eating less and losing weight. Now, research suggests that even healthy, nonobese individuals may reduce their risk for chronic health conditions, including type 2 diabetes and heart disease, simply by cutting 300 calories per day.