The V-Sit is an advanced core exercise that targets the abdominal muscles, particularly the rectus abdominis and obliques. To perform the V-Sit, start by sitting on the floor with your legs extended in front of you. Lean back slightly and lift your legs off the ground, keeping them straight. Your body should form a 'V' shape, with your arms extended parallel to your legs. Hold this position, engaging your core to maintain balance and stability. Keep your back straight and avoid rounding your shoulders. Breathe steadily and hold the position for the desired duration before gently lowering your legs and returning to the starting position.