Revamp Your Core Workout with These Unique Exercises.

Olympic water polo players focus on all-around core strength, not just six-pack abs, to endure in the pool. Christopher Bates, men’s senior sports-medicine manager for USA Water Polo, recommends skipping sit-ups and instead doing exercises that target the entire core, including the lower back and hips. Six exercises to boost core muscles beyond abs include the plank, bird dog, dead bug, side plank, glute bridge, and Russian twist.