Strenuous workouts, saunas, and hot yoga raise blood flow and body heat. That can nudge the toxin to nearby muscles, dulling your smooth finish. Play it safe: stick to light walking and skip anything that makes you sweat for at least 24 hours. One clinical review even recommends waiting a full day before vigorous exercise.
Quick tip: If your workout is non-negotiable, schedule your injections late in the day so rest comes naturally.