I'm just coming off the tail end of a yucky stomach bug, and I haven't eaten much of anything for a few days, but my milk supply has been fine throughout the sickness. WW was recommended to me by several people too. Also, exercising 1hr/day. The people who recommend it usually do stroller walks a few times a day. When my baby was smaller, I could park him in the bouncy or jumper and do a video or Wii, but he won't stand for it anymore.