Workout

[RonMexico]

Morning fast cardio question. So doing cardio in the AM, they say to do it an hour before you eat, how long is to long to go without eating? Say you wake up at 5, workout from 5:15-6:15, then wait an hour to eat, at what point does your body start burning the wrong stuff waiting on food?

FYI I always type on an iPhone, excuse my bad spelling
Not an expert but I took a shit load of nutrition classes and most of this comes from advance sports nutrition and it works for me so far so give it a try.

I would say to never fast before any workout . True athletes can never fast before a workout due to most have complex training schedules and they are always trying to train at their max performance and need to have their body recovery before their next workout.
Athletes are trying to gain strength,speed, endurance or cut weight and diet .... But at an elite level you can never have both.
Maybe a few have achieved both but it is hard to have a caloric deficit and push you body without have sports injuries.

Now about you body. Your body store roughly 1800 calories in the form of glycogen in your muscles. By the time you wake up your liver has depleted all the carbs in it but could hold about 400 calories if you were to eat. You want to eat that 400 calories( carbs) to have your body feed of the carbs from your blood steam at the same time it's taking from the glycogen(carbs) in the muscles. This will aid in a faster recovery and if you do two or three a days you need to have as much glycogen in the muscle

depending on how hard you workout is how much carbs and fat you are going to burn. I would say do a fast paced workout burning carbs(20-30mins) and then Slow down and get you heart rate lower so that your body gets enough oxygen to switch metabolic pathways and burn fat for the last half of your workout.
The better shape you are in the faster your body switches to burn fat, this is bc you store about 100000 of fat calories on your body.