muscle cramps

That sort of problem -- overtraining -- doesn't usually manifest
itself in cramps.

well, fred has a "medical" problem he needs to "practice" on.
besides the nurtrition angle-foundation for moving forwadr on the 100
miler idea-the explanation offered suggests an imbalance in a complex
muscle structure evolved not to cycle. Overtraining? Fred should
strectch, back up a bit, then move fortwadr again planning to rebalance
the muscle stucture for the 100 miler rather than what fred was
doing-climbing down from trees and running across the veldt in pursuit