Sure you can! Yoghurt is an ideal option for gaining energy before a workout. Yoghurt also cools down the body and helps you bring your core temperature down. Yoghurt is ideal for working out as it does not fill up the stomach. Yoghurt is a good option after a workout as well. If you have lost some energy then you can replace it by eating yoghurt regularly. Moreover, yoghurt is available in several different flavours as well. It comes in vanilla, chocolate, strawberry and other flavours. But personally I feel that the best option is plain yoghurt and this does not have any artificial preservatives as well.