Despite having two children and a busy work schedule, Carrie Underwood has managed to stay in top shape. She revealed on Drew Barrymore's show that she needs motivation to work hard at the gym, just like everyone else. One of her tricks is listening to boy bands during her workouts. She also uses cards for her Fit52 workout and stresses the importance of balance. Carrie also discussed her first holiday album and how she included her 5-year-old son in the recording of "Little Drummer Boy." She cherishes the memories made in the studio with him.