Medicine balls and mini bands are super useful for focused work on the core and the hips.

X-Body Abs

Using a ball with some weight, lay on the floor with your back pressed down into it. Legs bent, feet on the floor, and arms overhead with the ball. Raise your head and shoulders as well as one leg and exchange the ball behind the knee. Make sure to go from the outside in and alternate sides. Bring the ball overhead and close to the floor each time, but do not let the ball hit the floor.

Lat Activated Glute Bridges

Lay on the floor with the legs bent, feet on the floor. Take a mini band around your wrists and pull apart slightly so that you can maintain the resistance and raise the arms overhead.

Curl the tailbone under, squeeze the glutes, and raise your hips off the floor while simultaneously raising the arms so they line up with your chest. As you lower the hips, lower the arms back down – keeping the resistance through the mini band.