Training your legs twice a week can have several benefits if you are trying to build muscle. Here are a few:


Increased muscle growth: Leg muscles are some of the largest and strongest muscles in the body, and training them twice a week can help stimulate muscle growth and hypertrophy.


Improved strength: Regular leg training can also help improve strength, power, and explosiveness, which can benefit other areas of your fitness routine.


Better calorie burn: Training your legs can help increase your metabolic rate, which means you'll burn more calories throughout the day, even when you're not working out.


Balanced physique: Training your legs can help create a more balanced physique and prevent muscular imbalances that can lead to injuries.


Hormonal response: Training your legs can help stimulate the production of anabolic hormones, such as testosterone and growth hormone, which can help promote muscle growth throughout the body.


It's important to note that while training your legs twice a week can be beneficial, it's also important to give your muscles adequate time to rest and recover between workouts. Be sure to include rest days in your training schedule and listen to your body if you feel overly fatigued or sore.