Inhale and pull down with lats and elbows to pressurize torso. Un-rack barbell and step back from rack. Feet hip-width apart. Descend with chest up and hips down and back bending knees as far as comfortable. Weight squarely over feet without leaning backward or forwards. Torso should be more or less at the same angle as shins. Drive-up without hinging too far forward at hips back to standing position = 1 rep.