Sit tall with legs extended, arms holding straps, elbows straight.
Roll spine down sequentially while bending elbows into a bicep curl.
Pause briefly, keeping shoulders relaxed and core engaged.
Reverse the roll up, extending arms forward with controlled tension.
Préparations Tirage Dorsal Roulé Vers Le Bas Avec Curl Biceps Assis Übungsanleitung - Biceps Training | MuscleWiki