The timer beeps, signaling the end of your workout.

You normally feel pretty exhilarated after it’s over, but this was one of those workouts. One where there wasn’t a single movement you could come close to performing.

The rest of the athletes had hung from the rig, doing variations of toes-to-bars and hanging leg raises. Unable even to hang, you were on the floor with a medicine ball between your knees, trying to raise it to your chest.

When the coach saw your frustration with single-unders and quickly switched you to calf raises, you swore the whiz of all the double-unders in the room was even louder than the Metallica blaring overhead.

Shaking arms perched on the edge of a box, your performed “dips” that were barely perceptible. Across the room, your classmates looked far steadier as they moved up and down between the wooden rings.

Trudging toward the wall, you dread the novel you will write to describe your modifications when you log your workout.

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