The D/E System

Since I was a young lad I've swum against the current--deviating from the ruling zeitgeist, if you like. I was a bit hefty as a young lad, so the swim was sometimes slow and sputtering. About a decade ago, I was nearly a foot shorter but only 15 pounds lighter, putting me right on the cusp of what the CDC considers obese. Today I have a BMI of 21, well within the recommended range, and am still bucking trends: