Step Up Your Walking Workouts With These Power Tips

Walking on uneven ground, such as hills, sand, or grass, can spike many adults' heart rates above 75 percent of their maximum effort, Brian explained. This puts you into the moderate-intensity zone, that cardio sweet spot you should aim to hit for 150 minutes or more each week, according to the World Health Organization. If you're surrounded by flat streets, try this interval treadmill workout to create your own hills.