Fitness expert reveals one simple exercise for a stronger core — and it’s not a sit-up

Strengthening the core improves balance and stability, which supports movement and physical performance , experts say. While traditional abdominal exercises can be effective, one yoga pose may offer added benefits. Boat pose, or Navasana, forms the body into a "V" and challenges multiple muscles involved in core stability. Melissa Leach, a certified yoga instructor and strength and conditioning coach in Philadelphia, said a strong core provides a foundation for both exercise and everyday movemen