You can drink soybean milk for fitness, but in order to establish fitness goals, the main component of soybean milk is protein, but after drinking one or two cups, the protein content is not enough, so it is better to drink protein powder. Soybean 100g content table:

The average person needs 0.8- 1.0g protein per kilogram of body weight every day, and the demand for high-intensity athletes and bodybuilders is 2-3 times that of them. Because high-intensity exercise damages muscle cells to varying degrees, causing the decomposition of muscle protein, timely supplementation of protein can reduce the destruction of muscle tissue, promote the synthesis of protein, and even recover excessively, thus increasing muscle and improving strength.

Fitness goals play an important role in choosing protein powder. For example, bodybuilders and dieters have obvious differences in the proportion of nutrients. Weightlifters should look for products with high protein content, endurance athletes need protein powder with high carbohydrate and protein content, while dieters need protein powder with high protein content but low carbohydrate and fat content.