DumbbellSingleArmSeatedOverheadTricepExtension健身视频教程-三头肌锻炼
Dumbbell Single Arm Seated Overhead Tricep Extension
- Sit tall holding dumbbell overhead with one hand, arm fully extended.
- Lower dumbbell behind head by bending elbow slowly.
- Extend arm back up, squeezing triceps at the top.

