Your Body After Baby
Research shows (as well as what my mother has told me after having six children) that women's body's return to normal one year after giving birth--or at least need a year to recover. I am not talking about waiting six weeks to heal for coitus, but rather your internals. Hormone levels return to normal around three months, for the norm. I believe I felt better when my son was two months old. I was no longer sobbing over songs or other simple things, and I was not as edgy as I was. I was more emotional after giving birth that I was pregnant. Hormones are sneaky little imps who like to play tricks with our emotions.
I think nursing was a big part of that too. I never used formula and I didn't start weaning until Avery turned 1. Weaning and feeling better did coincide, so I think women who nurse may take longer to feel 'back to normal' again.
That is awesome about the martial arts. I bet you are one mommy no one messes with. :)