Many courses focus on complicated diets and
only strengthening the rectus abdominis... (the front abs you see).
However, your core possesses many important muscle groups that will directly affect your joint pain, performance, anxiety, sexual performance, bladder control, and stability.
So instead of doing 100s of crunches and sit ups... You can use that time to train your entire core and reap the incredible rejuvenating benefits of these little known muscles.
Such as your pelvic floor, multifidus, diaphragm, and transverse abdominis.