Cardio Exercises at Home

I like take cardio exercise at home. Because it offers me a convenient and effective way to keep healthy. I always do yoga at home. I think yoga is a great way to strengthen my muscles and boost my energy levels, as well as keep me slim. Also, I like exercise in the morning, which can energize me and let the following day be efficient, help me stay active and motivated. What's your favorite cardio exercise at home?