Who doesn't love doing core work? Come on, you know you love it! I spoke about dynamic stability, when it's in relation to your core. Your core remains stable or "quiet" while other part of your body moves against resistance.
Here is an oldie but a goodie, Mountain climbers. I have no idea why it's called this but when it's done right, mountain climbers improve your core and cardiovascular conditioning. More done in less time! Who doesn't want that?
Do rounds of 10 seconds work and 5 seconds rest( drop to your knees) for a total of 5 rounds. You will be glad you did.