I started walking a week after the birth (I had a natural birth and did not tear). I felt great the day after but just gave my body a week to adjust. I tried getting back into my workouts 4 weeks after but I noticed whenever I watched what I ate and exercised my supply would dip and personally for me, holding on to 10 lbs 6 weeks after the birth was not a big deal vs. having a dip in supply. The entire time I BF it was like that-no matter if I ate more while exercising or not. So I just didn't worry about it and when I was done BF the 10lbs literally came off in 2 weeks without diet or exercise chage.
Re: good exercises after birth