Her latest post features a new variation of push-ups you've probably never seen before — and we're pretty sure that's because Jillian invented it. She calls these "Diamond Belly Button Push-ups!" And they're "great for a flat tummy and sexy, strong arms."
You don't have to tell us twice, Jillian. You've likely seen a diamond push-up before, but Jillian revamps this variation by bringing her hands — still in a diamond position — right underneath her belly button rather than underneath her chest. This allows your abs to really fire up, which gives you a stronger, leaner core in the long run.
She even included a modifier for anyone who doesn't feel ready for the full variation yet. Time to put your abs and your arms to work, all at once!