Walking uphill activates 25% more muscle fibers than strolling on flat terrain, leading to faster firming. For best results, find a hill that takes 2 to 21/2 minutes to climb and try this workout from Judy Heller, a certified personal trainer and master racewalker in Portland, OR.
WHAT TO DO
Warm up at an easy pace for 5 to 10 minutes. Walk up the hill fast enough to feel that you’re breathing a bit more heavily, then back down; follow with 2 minutes of brisk 4-mph walking on a level surface. Repeat the hill walking and level walking until you’re at the 25-minute mark. Finish with 5 minutes of easy walking to cool down.