Melani, perhaps you and your husband could each bicycle to work sometimes and pick up your son sometimes? I think exercise is believed to be effective even if you only get to do it three times a week. If I were your husband and you expressed your complaint to me as logically as you just did here, I'd certainly be willing to compromise, understanding that it's important to improve your health as well as my own.

I had almost exactly the same problem. But last week, it occurred to me that on the 1-hour drive to pick up MY son, there's a park with a walking track. Now I stop for a 20 minutes and get a brisk walk in. It gets me home later, but on the other hand it's glorious to have 20 minutes entirely for myself (and nobody even knows where I am!).

Claire