6. "Try one of my 10-Minute Express Workouts as soon as you wake up to burn calories quickly and get your heart pumping before you even step out the door. String together a series of moves like Sumo Lunges, Bent-Leg Deadlifts, shadow boxing with light weights, or Spiderman Push-Ups. Go all out (as in really push it) and aim to do about 15 to 30 reps of each." —DK

7. "Do some Plyometrics: the ultimate (and often dreaded) calorie burners. The good thing? It doesn’t take long to reach 100 calories. Try basic moves such as squat jumps, jump switch lunges, skaters, and plank jacks — just 15 of each. Repeat the whole thing three times." —KM

8. "When at the gym, be sure to include a circuit of strength-training exercises done at a vigorous pace for 15 minutes to scorch an extra 100 calories. (Or at home, try the Ramona Braganza 321 Training Method DVD, which includes a circuit of three exercises performed one after the other before a 45 second break occurs. Repeat the set of three exercises, three times through, and do 20 reps, using moderate weight.)" — Ramona Braganza, a personal trainer in LA