Yesterday I came upon a Coyote rounding a corner. He saw my headphones and assessed my lower SA and saw me as prey. Bared my teeth and growled just in time to avoid an attack. Yet another negative to the old ipod.
With all the talk about SA I casually observed that over 22mph the wind noise made it nearly impossible to hear sounds in the enviroment. No birds chriping, no buses bearing down. Do those of you that consider hearing indispensible to SA keep your speed under 20mph?

Wonder how I've managed to survive 30+ years of riding motorcycles in the city wearing full face hemets and ear plugs. Must be one lucky SOB.