Sa'id bin al-Musayyab narrates from Sayyiduna Bahz (may Allah be pleased with him), who said: The Prophet (peace and blessings be upon him) used to use the tooth-stick (miswak) across the width (of the teeth), drink in sips, and breathe three times (while drinking), and he would say: "It is more pleasant, more wholesome, and healthier."
Hadith Referenceالمعجم الكبير للطبراني / باب الباء / 1231