If you’ve ever tried running on the beach, you’ve likely noticed that your speed in the sand doesn’t even come close to matching your speed on a sidewalk or track. That’s because the sand absorbs a lot of your energy and effort without offering anything in return, which means that you have to work even harder. But don’t be put off by the difficulty of sand workouts because there are major benefits. Since you’re working on an unstable surface, you expend more energy and burn more calories...
