Morning run on empty stomach?

I prefer to run on empty in the morning. For me it's a time preservation issue. I'd rather do the run and then eat.

pinggolfer96 wrote: »

As long as your daily calories remain constant, fasted cardio will be no different than fed cardio

There was a ton of bro-science about this for years, but nothing has been validated.
Personal experience is not science, but here goes.

This seemed to work for me, but my results could be coming from other factors, so I can't really say for sure. I do it as part of Intermittent Fasting.
Sometimes I just need to try things for myself.
My suggestion to the OP is try it out yourself for 6 weeks, and just see what happens. Post your results one way or the other.

It might depend on how far you're going to run, but it's often better to eat something before you run.

From the Australian Institute of Sport:

"Many athletes put a lot of emphasis on the pre-event meal believing it is the key element to performance. It is important to remember that food eaten throughout the training week and food and fluid consumed during the event is just as important. Consuming food and fluid before exercise should be seen as an opportunity to fine-tune carbohydrate and fluid levels and to ensure you feel comfortable and confident.

When should I eat?

Food consumed before exercise is only useful once it has been digested and absorbed. This means you need to time your food intake so that the fuel becomes available during the exercise period. The time required for digestion depends on the type and quantity of food consumed. Generally, foods higher in fat, protein and fibre tend to take longer to digest than other foods, and may increase the risk of stomach discomfort during exercise. Large quantities of foods take longer to digest than smaller quantities. Generally, food is better tolerated during lower intensity activities, or sports where the body is supported (e.g. cycling) than sports such as running where the gut is jostled about during exercise. A general guide is to have a meal about 3-4 hours before exercise or a lighter snack about 1-2 hours before exercise. You need to experiment to find the timing, amount and make up that best suits your individual needs."

http://www.ausport.gov.au/ais/nutrition/factsheets/competition_and_training/eating_before_exercise

More on what to eat at the link.

AlphaHowls wrote: »

I prefer to run empty (early morning run), my stomach gets upset fairly easily so I wait until evening to eat.

Same with me but only for short runs. When I go out for longer runs I usually grab something small (like half a large banana with a teaspoon of peanut butter) and leave immediately.

Runners like to do easy runs fasted because being good at burning fat as fuel is useful during endurance events. But it's for training not weight loss.

I do a 30-40 minute elliptical workout in the morning. If I do it on an empty stomach , I would probably faint !

Chieflrg wrote: »

Cardio burns calories not fat.

It makes zero difference as long as you are eating in a deficit on average.

Eat or don't eat whatever makes you more comfortable with the energy you need.

Question:
What about the fuel for the energy represented by the calorie burn?
How does one shift the odds of that being derived from stored fat as opposed to sugar?

I am studying info that is scientifically inconclusive and contradictory. Just wondering your take on it given your obvious knowledge.