BMI calculations might seem like some esoteric and complicated process that you have no hope of figuring out. That’s not true. BMI isn’t magic or some scientific secret withheld by those in the know. If you’ve ever used a BMI calculator online, then you know that you put in your height and weight, and it cranks out special number. There’s always a chart handy, or the website interprets it for you, and tells you whether you’re underweight, normal weight, overweight or obese, all based on this single number. The website did the calculations for you, but you might be wondering just how it arrived at that number. BMI calculations are fairly simple once you understand the basic formula. But first, let’s look at what BMI is and what BMI calculations are used for in the first place.

BMI is the measure of body mass. By comparing your weight and height, specifically dividing your weight by your height, squared, the BMI calculations give us a single number. Depending on where that number falls on a special scale, it tells you if you’re underweight for your height, in the normal range, overweight, or obese.

BMI doesn’t measure body fat, however, so often the number is wrong when it comes to athletes or very muscular people. Muscle weighs more than fat, so for them, BMI isn’t an accurate measure at all. For most people, though, it’s a very good estimate of weight in relation to height. So what BMI calculations allow us to arrive at that magic BMI number?

BMI calculations may seem complicated, but they’re really not. At its most basic, the formula is kg/m2. Or your weight in kilograms divided by your height in meters, squared (your height in meters times itself). A person who’s five-and-a-half-feet tall stands about 1.7 meters. Square that number (1.7 times 1.7) and you come up with 2.89. A person who weighs 150 pounds weights about 68 kilograms. So the BMI calculations to determine this person’s BMI would be 68 divided by 2.89. The result of that is about 23.5.

A BMI of 18.5 or below indicates that an individual is underweight. The normal weight range is from 18.5 to 24.9. Overweight people will calculate a BMI of 25 to 29.9. A BMI of 30 or greater indicates obesity. So a person with a BMI of 23.5 is within his or her normal weight range, according to the BMI calculations.

If you don’t want to convert feet and pounds to meters and kilograms, then you can use one of the other BMI calculations to figure your number. This person’s new formula would be weight in pounds, 150, times 4.88, or 732, divided by height in feet squared (5.5 times 5.5) which is 30.25. Then divide weight by height squared (732 divided by 30.25) and the result is 24.1, very similar to the metric formula’s result. BMI calculations can also be done by taking weight in pounds times 703, and dividing by height in inches, squared.

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Today more and more of us are living life on a dangerous ‘cocktail’ of unhealthy life style choices. Many of us eat too much of the wrong things (and not enough of the good stuff) as well as way too little physical activity, and way too much stress. These issues are the main reason that some things are becoming more common, such as diabetes for example. The good news is that if you act now, many of this can be turned around such as weight loss and diabetes.

Most doctors will tell you to lose weight and exercise more, but what few doctors will help you with is finding the best method to do that. They don’t seem to want to admit that it is difficult, that you may fail a few times before you find the right combination of diet changes and exercises that you like to do.

Most people think that ‘working out’ is all about the work part. And it is work, but if you find an activity that you actually enjoy doing, it won’t seem so difficult and you may even find yourself having fun.

Remember when you were a kid and the sheer joy you felt when you would take off in a dead run? Or how free and alive you felt just skipping down your driveway? You can recapture a lot of that joy if you take the time to find a physical activity that you actually like to do. That is the number 1 ‘secret’ to being successful in your weight loss: find an exercise that you like doing.

Of course getting more physical activity is the first part of the weight loss and diabetes equation. The second part is to make better food choices. I hate to use the word ‘diet’ because that can have such negative connotations. People often equate that word with eating celery stalks for days on end (which is completely counter productive by the way)

Instead I think it’s better to make better food choices and lifestyle changes. Start simple and small. What is your biggest weakness? Too much soda, sweets, carbs? Whatever it is, start there. Now, don’t expect to go cold turkey and completely cut those things out of your diet. It’s unlikely that you will be able to succeed. Instead just make it a policy of cutting way back on that problem item.

If you like soda a little too much, than concentrate on changing that habit and cutting way back. Only allow yourself one soda a day, for example. It’s all about moderation.

Go easy on yourself. Instead of setting yourself up for failure by setting some grand, lofty plan that will be virtually impossible to stick with, give yourself every chance of success.

Choose to start smaller, with more achievable lifestyle changes. It won’t take longer because the overly confidant goals will probably never be accomplished anyway. Smaller goals have a much better chance of success, so start there.

Most health issues can be improved or prevented by maintaining a healthy weight and getting exercise. Diabetes is one of those illnesses, weight loss and diabetes reduction go hand in hand.

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