If it's a nice day outside, you can always get some fresh air and hit the trails on your bicycle. Not only will the nature make your workout enjoyable, but it also gives you flexibility to go about your day by cycle (which burns more calories than simply walking).
But if you're looking for an indoor rest day workout, you should try hopping on a Spin bike, says Gahan.
Here's why. "This is the perfect add-on if you spend three to five days strength training and doing plyometric high-impact exercises, often found in HIIT or boot-camp style classes," she told POPSUGAR.
What's more, even beyond the average gym rat, those who have knee or hip issues can especially benefit from cycling, due to the lack of impact, she explains. "It's low impact on the joints, but high impact on the calorie burn," she said. In fact, you might expect to burn an average of 500 to 800 calories an hour, she said, depending on body size, weight, and output, of course.
