It happens rarely, but sometimes it's more chronic, or otherwise ends faily quickly. It feels like a bad muscle pull, or pain, occasionally directly on the navel, and hurts like a Be-atch when you raise your chest into the air, or bend backwards with more chest emphasis. I just had this pain again last night, took some motrin, and it was completely gone in the morning. The last I saw it was six months ago. What is going on???

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perhaps a very slight injury to that muscle just below your abs (and above your you know what) ?

If it comes back again then have a chat to your doctor about it. Better to be safe than sorry...

 

Also, have you noticed a pattern of when the pain occurs? eg, after doing more of a particular excercise or technique?

Pulled muscle, more than likely, or some stretched ligaments. Worst case, a mild hernia. See a doctor and get checked out. It could even be something having to do with your bladder or other plumbing.