300 balls feels great until the next morning. If you're a range rat or a Topgolf regular, you're doing more physical work than most people's gym sessions — hundreds of rotational reps, often at high intent.
Nobody would run 300 sprints without a plan for the day after. Golfers do it every weekend. You don't need to swing less — you need to manage what those swings cost: volume, intensity, and what shape you were in when you started.