Hi !
A disorder of the shoulder joint and its capsule, which then becomes inflamed and
stiff or frozen, is called:
<em>d. adhesive capsulitis.</em>
The deltoid and the triceps
to improve strength in deltoid u can do a seated dumbbell shoulder press
and to improve strength in triceps do reverse cable tricep extensions
I would expect the kids to enjoy their time on technology and not be exposed to anything that they should not be.