The Barbell Squat is a strength training exercise that primarily targets the muscles in the legs, including the quadriceps, hamstrings, and glutes. It involves placing a weighted barbell across the upper back and shoulders while standing with feet shoulder-width apart. The individual then lowers their body by bending at the knees and hips, keeping the chest up and back straight, before returning to a standing position. This exercise is commonly performed in gyms and is essential for building lower body strength and improving overall athletic performance. Proper form is crucial to prevent injury and maximize effectiveness, making it important to start with lighter weights and gradually increase as strength improves.