batvette
Critical Thinker
- Joined
- Dec 11, 2012
- Messages
- 470
That's a good question. We're just accepting this anecdote on face value without any knowledge of extenuating circumstances. It's just the urban legend.
Somebody else posted this earlier:
No, they aren't. The brain controls the way that the muscles contract. It limits the strength of voluntary muscle contraction (thought to be protection against damage). The number of muscle fibres simultaneously stimulated by the nerves dictates the overall strength of the contraction. Some people are stronger than average simply because they can activate more muscle fibres at a time. In emergencies, surges of adrenalin and stress hormones can cause this restriction to be overcome and temporarily allow a much larger number of muscle fibres to contribute, resulting in abnormal feats of strength (at the risk of joint damage and even broken bones).
So, no great mystery there.
Urban legend?