Another "been there, done that" Mom
I have 3 kids and continued exercising during pregnancy and postpartum. I also nursed each of my kids for a year. I really felt like I needed that workout time because it was the only quiet time just for ME! Even after getting up a couple times during the night, I got up 3-4 mornings at 4:45 to exercise before going to school (I teach). My hubby also had trouble understanding why it was so important, especially when I'd complain about how tired I was! He recently started working out himself and that's when he told me that I had always made him feel kind of guilty that he wasn't exercising too. I never asked him to or even talked about it, but just seeing me do it was enough to make him feel guilty, which caused some resentment. Maybe your hubby feels like he should be exercising to, but doesn't really want to, as mine did. Good luck!