There are several options available when it comes to protein shakes for your son. Some of the best options include: - Whey Protein Isolate (WPI): This is considered one of the highest quality proteins and is quickly digested, making it an ideal choice for those looking to build muscle or increase their overall protein intake. It’s also low in fat and carbs. - Plant-Based Protein Powders: These can be made from a variety of sources such as pea, rice, hemp, or soy protein powder. They are generally lower in calories and carbohydrates than animal-based options and may be a good choice for those who prefer plant-based products. - Casein Protein: This is a slower-digesting protein that is absorbed over a longer period of time, making it ideal for before bed or as part of a meal replacement. It’s also high in calcium and may be beneficial for athletes looking to build muscle and increase strength. It ultimately depends on your son’s preferences and goals but if he is looking to gain muscle mass, WPI may be the best option. If he is looking to maintain or lose weight, a plant-based protein powder may be more appropriate.