Execution:
1
With the barbell on the floor, stand shoulder-width apart and grip the bar just outside your legs.
2
Brace your core and keep a neutral spine; take the slack out of the bar.
3
Lift by extending hips and knees together, keeping the bar close to your body.
4
Lower along the same path, under control.
Tip: if your lower back rounds, reduce the load — perfect technique before weight.