"Okay, great! You're doing it!"
Sara stood right at the edge of the pool, stopwatch in hand, her gaze flicking between the timer and the heart rate board. Mark's pulse hovered at around 175—acceptable for his age group, though she'd hoped it would spike a little more during the anaerobic session. Still, not bad. After his twentieth lap, she hit pause on the watch. 28 minutes. Solid.
"Okay, good."
Mark reached the pool's edge and emerged, gripping the rim with slick fingers as he heaved himself out. Water splashed everywhere in a chaotic spray, but Sara didn't flinch.
"How are you feeling?"
She tossed him a towel, which he caught midair with practiced ease. As always, Mark didn't say much—just gave a curt nod as he started drying off.
Sara chuckled lightly. "You've improved. I'm impre
