A Romanian deadlift (RDL) is a strength training exercise that targets the muscles of the posterior chain, including the hamstrings, glutes, and lower back. It involves hinging at the hips and lowering a barbell or dumbbells towards the ground while keeping the knees slightly bent and the back straight. You may want to consider doing an alternative exercise if you have a history of lower back pain or if you are looking to target similar muscle groups in a different way.