I have a 2yr ol, and me and my spouse have the exact same way of functioning. We haven't quite figured out how to get 3-5 days but 1-3 days of exercise each is what we aim for. Or thinking it's the same: you can't have a happy family if your vitals (sleep, exercise, healthy food) are low. We try to combine 1 exercise (running) with going to a playground all of us and then one runs a round while the other cars for our son.