She groans in mock exasperation, but follows him through the series without complaint. Calisthenics. She hasn't done any in a long time, and she's definitely going to be feeling it later.

But it feels inexpressibly good to be moving her body the way she knows she can; to extend it and stretch her muscles and work them just past the point of endurance, so that the next time she can go a little longer, a little harder.

The series ends with a solid minute of burpees, and Sharon stays flat on the ground once it's up, her chest heaving. "Wow, I can't believe I let you do this to me."

She can't believe she let herself get this rusty, but that's beside the point.