Powerbar energize energy barsfor successful intense training or competition you should top up your energy levels before you start and refuel during sport with up to 90g carbohydrates per hour depending on the intensity and duration energize bars are a great choice before and during sport to deliver a scientifically developed combination of different carbohydrate sources features c2max dual source carb mix contain a special ratio of glucose and fructose sources sodium the main electrolyte lost