Handstand Strength - A progressive program designed for anyone at any level to work on developing a freestanding handstand. Gain strength and balance!

t-spine

Even if you have no aspirations to do back bends, a spine that can flex and extend properly will help you with the rest of life.
You can have the best shoulder mobility in the world, and it won't help if your spine can't extend.
To mobilize the T-spine prior to more intense movement involving lifting, throwing, and even running such as intense sprint work.