Over-work in the shop or factory, overtraining in the gymnasium or on the athletic field, both fall first and heaviest upon the heart.
"A Handbook of Health"
Woods Hutchinson
He also gives full directions for training for condition without danger of going stale from overtraining.
"Taxidermy"
Leon Luther Pray
It is rather my intention mildly to criticise some affectations and pretenses which I believe have grown out of overtraining among fishermen, or have resulted from too much elaboration of method and refinement of theory.
"Fishing and Shooting Sketches"
Grover Cleveland