Shift your thinking from couch potato mentality to thinking like an athlete. This may sound like a big challenge, but it’s not as big a leap as you think. Essex, Massachusetts mom April Bowling, 33, stopped using her busy life as an excuse not to exercise. After the birth of her children (now ages five and three), Bowling started viewing exercise as a way to set a strong example for her kids.

Whether you need to put an “I’m lucky” sticky note on the mirror, or you can see the power of health in your children’s eyes, committing to a fitness routine begins in your head.

There’s nothing more motivating than that first 5K looming in bold letters on the calendar. Register early and commit to an exercise program that will get you in shape by race day.

“Set realistic goals that include clear milestones, and as you progress toward your goal, you’ll find a ripple...