Rounding the back
Stop the descent sooner and reduce the weight until you can keep the spine neutral.
Hinge · Barbell
A barbell hinge with the bar on your upper back, bowing forward at the hips with soft knees. It works the hamstrings, glutes, and spinal erectors and builds hip strength for squats and deadlifts. Best for intermediate lifters with a solid hinge pattern.
The hamstrings and glutes lengthen as you hinge and extend the hip to bring you back up. The erector spinae work hard to keep the spine from rounding, more so than in an RDL because the load sits higher.
Stop the descent sooner and reduce the weight until you can keep the spine neutral.
Keep the knees soft but mostly fixed so it stays a hinge, not a squat.
Start with an empty bar and add small jumps; this lift is accessory work, not a max lift.
Surpass starts the good morning at 8–12 reps with about 2 reps in reserve. As a compound lift it usually belongs early in the session, when you are fresh.
Keep good mornings in moderate rep ranges (6-12) and add 5-10 lb at a time. If your back fatigues before your hamstrings, use an RDL instead.
Surpass shows what you lifted last time beside a target for this set, and adjusts it from your reps and RIR. Free on iPhone, no account needed.
These train the same main muscles. Swap when the equipment is busy, something hurts, or progress has stalled for several weeks.
They are safe when the load is moderate and your back stays flat. Most problems come from going too heavy or too deep.
Both are hip hinges. The good morning loads the bar higher, which works the lower back harder and uses less weight. The RDL is easier to learn and to load heavy.