Your Challenge:

Track that you've walked for at least 100 minutes each week. One possible strategy? 20 minute walking breaks Monday thru Friday.

Why Do This?

Walking is the most basic of basic exercises—but it's awesome. Whether you're at the beginning of a new fitness journey, or you spend each Sunday morning at the Start Line, everyone can find benefits (both physical and mental) in walking.

• How Many Calories Burned Walking, livestrong.com
• 4 Ways To Turn Your Walk Into A Workout
• Keep Walking to Stay Mentally Sharp, by Gary W. Small, MD

RunKeeper
(Free; iTunes, Android)

iMapMyWalk
(Free; iTunes, Android and Blackberry)

Lose It!
(Free; iTunes and Android)