Habit 1: anytime, anywhere. Stretch the front bracelet, open the shoulder to improve the round shoulder buckle, and the force of pushing the wall can also thin the arm.
Habit 2 and advanced version adjust the height according to everyone's physical condition, take your time!
Habit 3: Activate the strength of the anterior serratus muscle at the back of the armpit, thin the big arm, and let you have a good-looking shoulder.
Accustomed to the ultra-thin arms of 456, especially the six, dull 10 breathing, I really can't bear it.
With thick shoulders and short neck, the whole person looks like a tiger's back and has no temperament. This group of small habits with open shoulders and thin arms and thin back must be developed.