Saddam hussain on Instagram: "Exercise Breakdown Phase 1 (first reps, elbows in flexion): • Movement: Partial reps from full flexion (top half). • Target: Primarily short head of the biceps. • Effect: Increased isometric tension at peak contraction. Phase 2 (next 15 reps, elbows neutral): • Movement: Mid-range reps (neutral elbow position). • Target: Short head remains primary, but the long head contributes more as the arm opens. • Effect: Balanced tension between both heads. Phase 3 (final 15 r