Rowdy Energy, a US-based manufacturer of energy drinks, has announced the launch of Power Burn, a new product that is claimed to burn up 135 calories per can, in addition to having energising benefits. Launched in Pink Lemonade, Pineapple Passionfruit, Mango Dragonfruit, and Watermelon varieties, Power Burn energy drink is described as containing only 5 calories per can and as providing 160mg of natural caffeine from green tea and green …