By a staff reporter : Starting out your day with a walk may give you more energy throughout the day. If you walk outdoors, that’s especially true.Studies show that adults who walked for 20 minutes outdoors experienced more vitality and energy than those who walked for 20 minutes indoors.A small study found that 10 minutes of stair walking was more energizing than a cup of coffee for 18 women who felt sleep-deprived.The next time you need a morning energy boost or feel tired when you wake up, you may want to try a walk.