Reinforcing shoulder pack?

[chris hansen]

Hello,

Are there any specific exercises that will help reinforce shoulder pack, especially for punching?

Thanks

[HereBeADragon]

hitting a heavy bag? I think working on the bag and being aware (actively remembering to pack your shoulder) of how you pack your shoulders should help a lot.

[parkour]

Heavy Clubbells? Static Clubbell® holds? ahh pull-ups, push-ups on push-up bars.. there are just my opinons.