It was a Happy Reunion this morning for "inseparable twins" Leah and Karenina as Leah returned from her trip to Greece, Italy and Israel. While Leah and her husband covered a lot of ground during their six-week sojourn, she especially enjoyed a trip to the Greek Island, Santorini, where she celebrated her birthday. Meanwhile, Karenina -- the other half of the "dynamic duo" known for their strenuous early morning workouts -- downplayed Leah's absence. "Oh, I just listened to a lot of books on tape," she said. I guess it's true what they say, "Nobody is irreplaceable!"