Lie prone supported, arms bent, elbows pointing forward.
Set shoulders down and back, engaging mid-back for stability.
Extend elbows fully, pressing arms long without shoulder movement.
Bend elbows to return, maintaining control and upper-back engagement.
Midback Series Triceps Press Lying 运动指南 - ट्राइसेप्स 锻炼 | MuscleWiki