I was out swimming today with my wife and daughter and noticed for about the 18th time that I'm completely unable to float on my back even with my lungs full of air. I used to be able to float, but lately I just sink slowly to the bottom of the pool. I hunted around on the Internet for an explanation and stumbled across the following interesting quote at www.viable-herbal.com/health/health39a.htm:
"...you can estimate your fat ratio by seeing how well you can float on your back in a regular swimming pool: above 25% fat, people float easily; people with 22-23% fat (a healthy level for women) can usually float while breathing shallowly; at 15% fat (low for a woman, healthy for a man), one will usually sink slowly even with a full chest of air; at 13% or less fat, one will sink readily even with a full chest of air, even in salty ocean water."
Sure enough, my calipers say I'm around 15-16% and, therefore, I'm a sinker rather than a floater. I know we've discussed %BF measurement in the past, but I don't think anyone came up with this little trick so I though I'd share it.