In addition to taking the weight loss supplement youthH2O, for which she is a spokeswoman, Lozada said she is eating clean and working out "three or four times" a week.
"I have been sleep deprived lately and going to the gym can be hectic when you have no time in your schedule," she said. "But, on the days that I do have a moment, I do a ton of cardio, weight training -- which I love -- and hiking."
Lozada and Los Angeles Dodgers outfielder, Crawford welcomed Carl Leo, on March 22.
"Carl is a wonderful father and awesome fiancé who has been by my side the entire time," she said. "He is so excited about baby Carl Leo. You should see them together!"