What is "protein shake"?

A protein shake is a type of drink that is made by blending protein powder with liquid, such as water, milk, or juice. The protein powder can be made from a variety of sources, including whey, soy, pea, or egg white. Protein shakes are often consumed as a nutritional supplement to help support muscle growth and repair, as well as to aid in weight loss and promote satiety. They are a popular choice among athletes and bodybuilders, as well as those looking to supplement their diet with additional protein. Protein shakes can be customized with a variety of flavors and additional ingredients, such as fruit, nut butter, or sweeteners, to suit individual tastes and preferences.