With that being said, I cannot think of a better week to work the core. Now to be honest, for the longest time I had no idea what BOSU ball was. I used it, but I just referred to it as a "half exercise ball." But now that I have been properly introduced to it, in all its wonder, I have become quite fond of that little half ball.
It definitely promotes balances and stabilization. Either side of the ball gives you an optimal workout. Ohhhh, optimal. Look at me using fancy words.
Anyway, here are some photo examples of various workouts that you can do for a set amount of time (the plank of a bosu ball) or 3 sets of 15 reps (squats on a bosu).