Although this number will be unique to you, many people can expect to gain muscle mass from 200g to 1 kg per month. To do this, you will need a targeted weight training program and proper nutrition, usually with an excess of calories.

The set of muscle mass is different for everyone and will depend on your level of physical fitness, gender, age, hormones, calorie intake and training regime.

Weight gain involves more than just an increase in muscle mass.

If you're trying to build muscle, but it seems like it takes forever, maybe your diet isn't enough to support the muscle growth you're aiming for. This is due to the fact that in order to stimulate muscle protein synthesis, you need a large number of calories, which are not easy to get if you are also trying to maintain or lose weight.