Overhead press exercise
For the overhead press exercise, I’d suggest starting out sitting on a chair or exercise ball. Facing forward, dumbells can be held just above shoulder level. Palms can face forward. To do this movement, shoulder and arm muscles can be used to extend the arms directly upward above the shoulders. It is good to start with no more than 8 reps and progress to 12 eventually, and then a number of sets.

Overhead press exercise part 1 with Eric

Overhead press exercise part 2 with Eric