Drink whey protein powder! You just started exercising for five days. In principle, it is not recommended to eat protein powder so soon. I'm not saying that protein powder itself has any side effects, but it's true that excessive intake is bad for your health. You have just practiced for five days, and fitness is still a completely strange field for you, so the control and understanding of your own exercise is not mature, so it is not recommended to eat! If you really want to eat it, it is recommended to eat it with muscle-building powder. Protein powder is high purity whey protein. Besides protein, you need carbohydrates to build muscles. If you eat protein powder, it is necessary to eat muscle-building powder!

In my personal opinion, it is not recommended that you buy it now. Beginners need to strengthen their usual diet level, so as to achieve good muscle gain effect. You can choose to eat chicken breast, beef, potatoes, bananas and so on! Wish you success!