To build muscle mass, you need to focus on two main things: training and nutrition. In terms of training, you should be doing compound exercises that work multiple muscle groups at once, like squats, deadlifts, and bench press. Aim to lift heavy weights with good form, and gradually increase the weight over time. As for nutrition, make sure you're eating enough calories to trenbolone buy support muscle growth, and getting plenty of protein to repair and rebuild muscle tissue. A good rule of thumb is to aim for 1 gram of protein per pound of bodyweight.