Get Washboard Abs With This 5-Minute, No-Equipment Workout

We can hear Erica in our heads telling us to "make a rainbow" with our booties when we look at this move! This is one of her signature core moves, and while it looks simple, it's gonna rooock your abs! She suggests you "rotate the hips side to side until your hip is about one to two inches off the floor — this creates a deeper oblique rotation and it's great for curving out the sides of your abs!"

• From an elbow plank position, slowly rotate the spine to lower your right hip to just above the floor. Come back to elbow plank.
• Now lower the left hip toward the floor.
• This counts as one rep. Do as many as you can for 60 seconds.