He grabbed a jacket, stepped out into the hallway, and let the heavy door click shut behind him. The "emotion sickness" was still there, a dull ache in his chest, but as he took his first step toward the stairs, he decided—just for today—he was done with the rehearsal. If you'd like to refine this further, let me know:
He wasn’t sure. Time had become elastic. He’d spend four hours watching a single water droplet track down the windowpane, feeling a strange, hollow kinship with it. It was just gravity. It was just the way things went down. Silverchair - Emotion Sickness
Should I expand on a or keep it as a shorter "vignette"? He grabbed a jacket, stepped out into the