Ms. Bikini Latina Karely Herrera says, "People ask me why I do cardio fasting sometimes️ Well, fat is the primary fuel used during sleep. When we wake up there are chances that the amount of free fatty acids is higher. As these fatty acids "no longer have to be mobilized" (they are already released) they become easier to oxidize to be used as fuel and consequently in the morning they are more ready to be used when doing cardiovascular exercise. If you want to burn that tire, do cardiovascular fasting. Some tips include not drinking less than 30 minutes from when you get up until you start your preferred morning cardio."