Triceps Straight-Arm Pressdown/One-Legged Squat on BOSU with blue side
up. Standing on one leg on BOSU (blue side up), go into shoulder flexion
with both arms while squatting on one leg (hip flexion and knee
flexion). Stand out of squat (hip extension/knee extension) while
returning arms to start position (double shoulder extension). Repeat for
reps.
— mb