1
Sit on a flat bench with feet positioned on the floor, knees bent at approximately 90 degrees, torso upright, holding a dumbbell horizontally across the thighs with both hands
2
Grip the dumbbell securely with both hands positioned near the center of the bar, feet planted firmly on the ground shoulder-width apart, core engaged
3
Lower the dumbbell toward the floor by allowing the knees to bend further, controlling the weight through eccentric contraction of the quadriceps, maintaining an upright torso position throughout the descent
4
Drive through the heels and extend the knees to lift the dumbbell back to the starting position, squeezing the quadriceps at the top of the movement, exhaling as you drive upward