Drills to keep shoulders relax

[Noodles03]

Hi, are there any drills that you guys use to keep your shoulder relax while sparring or hitting the mitts or heavy bag? Thank you.

 

[ARIZE]

Lots of shadow boxing with relaxed shoulders in mind.
When you spar or hit the mitts, its difficult to concentrate also on relaxing when you are a beginner... Easier on heavy bag and specially on shadow boxing.

 

[j123]

Service yourself 10x before training so your shoulders will be nice and relaxed

 

[Samuel Reynoso]

I've started holding my fists up, and circling them in BIG circles on a horizontal plane at shoulder level. Like an eggbeater. The whole time I try to keep my hands actively externally rotated(elbows in) and my hands up(elbows up(serratus)), but everything else relaxed. Especially my neck and stuff.

Here. Kinda like this but bigger circles.

 

[4daLuLZ]

I've started holding my fists up, and circling them in BIG circles on a horizontal plane at shoulder level. Like an eggbeater. The whole time I try to keep my hands actively externally rotated(elbows in) and my hands up(elbows up(serratus)), but everything else relaxed. Especially my neck and stuff.

Here. Kinda like this but bigger circles.