That's Fit

So the Body Mass Index (BMI) may not be the best indicator of obesity. It only accounts for height and weight and gives a whole host of other factors (muscle mass, for one) no attention at all. There's also the skin fold test, or pinch test. I called my local health and fitness center to inquire about this option -- I'd really like to see where I fall on the body fat spectrum after losing some weight -- and I was told it's not all that accurate either. Since the skin is pinched and measured using calipers, it's difficult to grab the same fat each time it's done. Obviously, this can skew results. So where do I go now for a precise evaluation of my fat?

I could go for a waist-hip ratio -- a tape measure is used around the waist and hips -- but this won't tell me exactly how much fat I'm carrying around. That leaves one method -- hydrostatic weighing. It happens to be the only route recommended by the fitness trainer I spoke with on the phone, and it involves a whole lot of water and a whole lot of exhaling.

Hydrostatic weighing works like this: After expelling all of the air from the lungs, a person is repeatedly submerged in water for five to 10 seconds. It's a very reliable measure, the gold standard really for assessment of body composition. It can be scary for those who fear the underwater world, but it works and is available at various health and fitness centers.

What do you think -- would you get dunked to capture the essence of your own body fat?