Plank with Rotation:
Begin this exercise in a regular 4-point plank position. Keeping the core tight, slowly start to pivot while reaching your arm to the sky, then reach back under and repeat. Note: Make sure to alternate sides!
Single-Leg Deadlift:
This is an advanced deadlift. It is a great exercise to target the hamstrings and glutes. It's also great to build balance and stabilization in the body.
Begin by holding a dumbbell in one or both hands. Standing on one foot, pivot at the hip bringing the dumbbells torward your foot. The other leg goes up in the air for balance.