I put a white-noise machine (same as a fan, really) outside the kids' bedroom, close the doors to the room I work out in, and my husband wears earplugs.
The other issue is getting my brain to move my body in a coordinated way at 6:00 in the morning.
"She's living in sin with a cowboy, and hell--he can hardly even walk!" --J.R. Ewing, "Dallas"