While you don't have to do cozy cardio this early in the morning, we admit that the pre-dawn hours make for an aesthetically pleasing backdrop. Zuckerbrow defines cozy cardio as a light cardio workout in a cozy atmosphere, aimed to help heal your relationship with movement. Cozy cardio initially went viral with Zuckerbrow in 2023, but it's already picking up again as we head back into fall. Cozy cardio, a term coined by TikTok creator Hope Zuckerbrow , is all about creating a cozy atmosphere in which to do an at-home cardio workout. While Zuckerbrow has been doing cozy cardio since 2022, the trend is still picking up steam.