Complied on Friday, April 15th

We revealed big news this week: Our cover model, Jillian Michaels' – known for her tough, no-nonsense attitude on The Biggest Loser – doesn't like working out! Here we share her super-challenging 20-minute workout routine that gets you in and out of the gym faster. Plus, speedy secrets from pro marathoner Desiree Davilla before she takes on the Boston Marathon and more hot stories this week.

Sculpt your body with 5 challenging moves The Biggest Loser Trainer Jillian Michaels uses to keep her body tight and toned.

Fourth fastest female marathon runner in the country Desiree Davila shares her 6 top tips for finishing fast. See how she does at the Boston Marathon, Monday April 18th.

Beat fitness boredom with 50 fun ways to get moving this spring.

Get moving and drop pounds with top tips from Walk at Home creator Leslie Sansone.

New apps make healthy eating easy. Find out how your camera phone can count calories for you.

More hot stories this week:

-Fit Sugar

-New York Times