What is BMI?

Measuring the weight of fat can be done with automatic electronic equipment, but you can use the BMI formula easily as well.

The value of weight-index (BMI = Body Mass Index) shows your actual physique: underweight, normal or overweight. In the case of a very muscular bodybuilder or a person with dense bone structure, this value is not relevant, but for most people it serves as important information.

You can calculate the weight-index by dividing your weight (in kilograms) with the square range of your height (in metres).
In my case it equals: 85kg / (1.86cm X 1.86cm) = 24,5.
On the basis of this you can calculate your own BMI:

____ kg / ( ____cm X ____ cm) = _____

Normal BMI value is between 20-25, under 20 its thin, above 25 its fat. The more it moves away from the average the bigger the problem is, either if we look at emaciation or fatness. The explanation for each value range can be found here.

These values mostly are for normal humans and not for athletes.

BMICategorySuggestion
Under 18.5UnderweightWeight gaining diet
18.5 - 24.9NormalNormal diet
25 - 29.9OverweightNormal diet and more exercise
30 - 34.9ObeseStrict diet and lifestyle changing
35 - 39.9Severely obeseMedical diet and lifestyle changing

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