Having strong abdominal muscles is key to your everyday happiness. Whether you realize it or not, your abdominals are the power behind every move you make.
How often should I work on my abs? - Quora
Core Stability, Abdominals, Back Pain, Pouch, Weak Core — Priority Physical Therapy, LLC
Core Strength: It Is Not About How Many Sit-ups You Can Do! - Specialized Orthopedic Physical Therapy
Exercises to improve your core strength - Mayo Clinic
Yoga for Abs: 8 Classes for a Stronger Core — Alo Moves
The Definitive 10-Step Guide to Building a Do-Anything Core
Should we engage the abdomen all the time?
The Best Exercises for Stronger Abs and a Stronger Core
Tip: Train Your Abs Directly
anatomy – Custom Pilates and Yoga