On the 22nd and 23rd June, lululemon’s Sweatlife Festival returns to London’s Tobacco Dock for the fourth year - bringing together leading studios, local and globally-renowned yoga teachers and inspirational speakers for one sweaty, fun, thought-provoking weekend. There'll also be plenty more to explore and experience, with a market hall, great food and drink, chill-out areas, drop-in massages and a few exciting surprises throughout the weekend.   OPPORTUNITIES TO SWEAT AND BEND Sweatlife Festival is a party celebrating the ever…