Protein shakes and protein shakes for gaining weight / building mass

Would you like to gain weight or gain body mass? 
To gain weight, you need to consume more calories than you use. This can be done by so-called weight gainers or mass gainers, which have a high proportion of carbohydrates, are high in calories and thus provide energy. Gainers also contain protein for an appropriate supply of the muscles. These shakes are suitable for people who are underweight, for people who gain weight or those who want to build a lot of muscles. Bodybuilders first build muscle mass with weight gainers in order to emphasize them in the definition phase. These shakes are ideal for gaining more weight and mass: