I have a 1 yr old and a 2 yr old. My husband works about 70 or hours a week and I'm a SAHM. I would love to go for walks everyday but it is just too hot outside and the sun is killer.
Anyway I bought the Zumba dvds and LOVE them. My kids dance with me! I like that they are seeing me working out and hope it helps them learn to do it naturally so it's not such a struggle like it is for me.
I have the four dvd set and it has an ab dvd too.
So, some evenings we go for walks, some days I do Zumba and on days my son is preschool I take the 1 yr to the pool.
Good luck and I hope you find a solution to your workout needs and sleep!