More Proof That Fatigue is Voluntary
So, all this time when my legs give out, then my legs aren't really tired -- I'm just lazy and quit?
Now, I'm not a scientist or a doctor or even a trainer or physical therapist and I accept that fatigued muscles will respond enthusiastically and vigorously to an external stimulus like an electrical shock. You can apply an electric shock to the legs of a dead frog (even to severed frog legs) and they will react as if the frog is jumping but that doesn't mean the frog could just decide to keep on jumping.
I suspect there's more to the story than just simply, Fatigue is in your head.
Still, if you want to shame your running partner into going farther, just point him/her to that web site. Or threaten her/him with electric shock treatment.
This morning: 3.1 miles, slow (9:23 mpm), 52° (eat your hearts out, American south running friends). I quit because I was ... (1) tired?, (2) lazy?, (3) a long way from anyone who would hook me up to an electrical current?
Run well, y'all -- and don't quit,
PS -- Personally, my unscientific opinion is that our brains tell us to quit before our legs give out completely in order to protect us from injury or death. But, hey, what do I know?