Easy cardio is a popular way to make the most of a lazy day. Whether it's hopping on the treadmill for a slower or shorter session or taking a walk around the park, many of you said you decrease cardio intensity when you aren't in the mood. But some of you don't give in. Reader Greta says that even on her lazy days she chooses spinning, "because I know I will always leave feeling 100 times better than when I went in!" If you're feeling sluggish, exercise can re-energize you, so keep that in mind the next time you need motivation to get off the couch.