Focusing on targeting the hamstrings (or glutes depending on how you do it) the single-leg RDL is accessible to all fitness and strength levels, easily modified by keeping both feet on the ground or increasing your weights. Below, fitness trainer BB Arrington, CPT, provides her top tips for nailing this move for a more balanced base of strength—plus, better stability. One last tip: “Remember to focus on the hinge of the hips instead of how low you can get the weight to the floor—let your hinge determine the depth of the exercise,” she adds. If you need to scale it back even further, Arrington shows that you can stagger your legs but keep them both on the ground so you’re still focusing the weight on the front leg without adding balance into the mix. Here are some other useful modifications: How-to: How-to: How-to: Whether you’re just starting out or have been weight training for years, the single-leg RDL should be a staple in your stability routine.