athletize

To get athletic or act in an athletic way.

You won't athletize without regular exercise.

I neither rode recklessly, flirted'desperately, carried clothes imperially, turned men's heads, broke their hearts, sang divinely, athletized, literatized, antagonized.

To make athletic.

Months of training finally athletized my skinny body.

To do this rightly, a certain and well-chosen series of exercises, calculated to athletize the Intellect, will require to be undertaken, and in its accomplishment certain qualities of thought will be elicited, produced, or won and nourished.