Should I Immediately Exhale While Swimming?
Exhaling while your face is underwater is usually a good habit for face-down strokes like freestyle and butterfly, but you rarely need to force all the air out instantly. The best timing depends on your stroke, fitness level, comfort in the water, and any health considerations. If you tend to hold your breath or feel breathless, a steady underwater exhale is worth trying; if you have respiratory or cardiac concerns, consult a professional first.