Are you ready to incinerate lower belly fat? Tone up those hard-to-work lower abs and get some serious fat burning cardio in, all in one-fell swoop with this challenging (but fun!) move. The "Knees and Toes [1]" works your lower abdomen while testing your formation, so you're not getting bored at the gym. Let's get that heart rate up!

Here's how you do it:

• Start with two high knees, bringing your right knee to your left hand, then your left knee to your right hand.
• Now rotate your right knee slightly outward to bring your right ankle to your left hand, then your left ankle to your right hand.
• Continue in this alternating pattern.