packed shoulder

There is no greater exercise for posterior chain development than the single-leg Romanian deadlift (1-leg RDL)
The waiter’s walk might be one of your best tools to build shoulder stability and strength.
These two exercises are perfect for people who have trouble reaching full thoracic extension, i.e. everybody.
There's an exercise you aren't doing that could change everything for your body.
Here’s a simple progression to transition from two-hand to one-hand swings, and fix your shoulders problems too.