One hundred years ago today Alfred Wegener presented his Continental Drift hypothesis to much derision and scepticism. Alfred Wegener first thought of this idea by noticing that the different large landmasses of the Earth almost fit together like a jigsaw.
BMI readings under 18.5 mean you are underweight, and could put on a few pounds. If you fall between 18.5 and 24.9, youâre considered normal, while a BMI of 30 or higher qualifies as overweight. But in recent years, more researchers argue that itâs not the most accurate way to measure body weight. For years, scientists have said that BMI canât distinguish between fat and muscle, which tends to be heavier and can tip more toned individuals into overweight status, even if their fat levels are low.
The body mass index revolves around weight and height. To calculate BMI, divide your weight in pounds by your height in inches squared, then multiply the result by 703. For example, if you weigh 160 pounds and are 68 inches tall, divide 160 by 4,624, which is 68 squared. Multiply the answer, 0.034, by 703 for a BMI of 24.3.