Today’s booty-crazed world has shifted the focus behind us, and we’re not complaining: Your posterior chain is a powerful partnership between glutes and hamstrings that propel you to faster sprints, bigger lifts and higher jumps. Use these deadlift variations to master the all-important hip-hinge technique and create that sexy strength and power you need to lift some seriously heavy stuff — and of course fill in those jeans quite nicely, thank you very much.

Level 1: B-Stance Dumbbell Romanian Deadlift

This move is a great way to target one leg at a time, which can help reveal and then overcome strength imbalances. Since you still have the support of your “kickstand” (back) leg, you can go a little heavier without being limited by your ability to balance on a single ankle.