This is why you're tired: Motherhood is equivalent to working 2.5 jobs, study says

We all know there are no days off in parenting—and new research shows just how hard moms are working. A recently released study by Welch’s looked at 2,000 American moms of kids between five and 12 years old, and found the average hours moms work per week is 98. As in the equivalent of two-and-a-half...