One of the most common questions associated with protein powder is when and how to use it. Protein shakes aren't the answer to filling your daily requirements, but they can be used to boost your intake throughout the day. Nevertheless, this isn't their most important function. In the 15-30 minutes post workout the body craves protein in order to kick-start the recovery process, failure to do so will impede both muscle gain and fat loss, this is where protein shakes come into play. Protein shakes provide a convenient protein source immediately post workout, and is why the majority of people drink them straight after training. For more information on post-workout supplementation, click here.