Overstrains vs Overtrains - What's the difference?

As verbs the difference between overstrains and overtrains

is that overstrains is (overstrain) while overtrains is (overtrain).

(head)

(overstrain)

(en verb)

To subject to an excessive demand on strength, resources, or abilities

Clover warned him sometimes to be careful not to overstrain himself, but Boxer would never listen to her.

(head)

(overtrain)

(overtraining)

(en verb)

To train too much or too long.

Jim overtrained and found that he was exhausted by the time of the competition.

I think I've overtrained my leg muscles.