According to research – NO.
And research has been showing us that it might actually hurt us.
“Really? Hurt us?”
Yes and maybe even cause ruptured discs in your back.
All the personal training experts on TV, in magazines, and at your gym are telling you to drop to the mat and give them 100.
Why can I assume that? Because 99% of Americans are posturally imbalanced and have or will experience pain and injury because of those imbalances. And those imbalances are being strengthened by every sit-up, crunch, plank and medicine ball twist you do. (Not to mention every other physical activity including weight lifting, running, swimming, yoga, Pilates, etc.) This is a bad thing.