The pistol squat is a challenging single-leg squat variation that requires strength, balance, and flexibility. Stand straight with your feet together. Extend one leg straight in front of you and lower your body into a squat on the supporting leg, keeping the other leg extended off the ground. Aim to squat as low as possible while maintaining balance. Keep your back straight and chest up throughout the movement. Push through the heel of the foot on the ground to return to the starting position. Switch legs after completing the desired number of reps.