I'd argue that you shouldn't.
I know it sounds counter-intuitive, but working your abs every day can actually cause weakness in your core. Hear me out.
This is for one reason: overuse. Overuse can not only cause injuries in your body, but it can reduce results from your exercise program, and the abs are no exception. If you did bicep curls every day, your elbow probably wouldn't feel very good. You would probably develop an inflammatory injury like tendonitis, which would set you back from continuing to exercise and increase strength.
When you work a muscle, whether you are exercising or doing a physically demanding activity in daily life, tiny tears happen in the muscles. These tears are good, as they signal your body to begin the inflammation process. This inflammation process swoops in to heal torn/damaged tissue, and the result is stronger muscles.
This inflammatory process can...
There are many "givens" in the fitness and physical therapy world, and as someone who is seeking to help others, it's important to continually challenge those norms. I do this with my own philosophies constantly - I'm always looking for different angles, and I often prove myself wrong. That's the beauty of this industry. It's changing as we learn more about science, the body, and the brain.
To that end, I want to apply an analytical lens to norms about the "core." I always challenge my clients that if they aren't getting the results they want - either because they are in pain or because they do not see progress, it might be a good time to re-evaluate your routine and beliefs. `
The "core" is a common term used in the fitness world, but it has various definitions and isn't very specific. In this post, I'll often use the word "trunk," which refers to all the muscles in 360 degrees surrounding your spine.