Power to the people
I see where you are coming from, but nasal turbines? Yuck!
What about piezoelectric insoles? Every step you take, every breath you take... oops, got off on a Stingtrack...
But seriously, that is a lot of force being applied every step, if a bit of it could be converted into electricity... might even put a spring in your step, literally.
And remember those self-winding watches? You know, the kind with hands instead of digits, no batteries, just a clever little mechanism that convered body motions into rotary force that kept the watch wound. make them bigger, and a few of those on ankles and wrists, maybe, would generate some juice... plus the inertial resistance they develop would be good for you, too - no need for velcro weights.