Elbows bend during the pull-apart
Biceps assist; horizontal abduction becomes a row.
Overactive muscles
Biceps brachiiLatissimus dorsi
Corrective work
Foam RollLats↗StretchLat stretch (kneeling overhead)↗Biceps assist; horizontal abduction becomes a row.
Upper traps elevate; mid-traps and rear delts underactivate.