early bird workout freaks.....

Can a car run with an empty tank of gas? No. and Neither will you. It's best to eat BEFORE you workout. Your body needs fuel to function as well as perform intense workouts. Another girl just asked this and a guy that works out or at a gym was saying he seen some lady workout before she ate and she ended up fainting and breaking her jaw as well as a few teeth. Not trying to be rude .. Just tell it how it is. Use common sense everyone .. we don't need any injuries :-)

How do you know this happened to her because lack of food? she could have a pre-existing condition...how do you know? I've seen people, including myself get better results from not eating before a morning workout. It's not a bad thing to do. And FYI, my body isn't a car, you can't compare the two, we have fat reserves our body can draw from, when a tank is empty it's got nothing to draw from. If you want to debate the topic, have some actual data to back you up, and not "welll..a friend of a friend, saw someone who knocked her teeth out cause ..well...I think she didn't eat before she worked out. For some people it works, for others it doesn't your body will let you know.

Aerobically, the body can only work out at a maximum of about 60% of VO2 max if it is relying solely on fat as a fuel substrate. That's just a fact of beta oxidation. So, someone who is able to perform a hard workout, even in a "fasted" state, is still using the usual amount of carbs/glycogen. Just because you are "fasted" does not mean that your glycogen stores are depleted. Despite the cliches thrown about the subject, the vast majority of exercisers will not come close to using up their stored glycogen.

The body doesn't really care what you "want" to do or not. It is going to choose a fuel substrate mix based on the intensity demands of the exercise. High intensity = higher percentage of fuel from glucose/glycogen.

And the acute event of substrate utilization during a workout has little if any long-term effect on weight loss. A number of studies have shown that, in the 24 hour period following a workout, fat oxidation occurs inversely compared to the rate of fat oxidation during the workout--e.g. if you burn more fat during the workout, you will burn less during the post-workout period and if you burn less fat during a high-intensity workout, you will burn more during he post-exercise period--so it all evens out over time.

Pre and post-workout feedings should be designed to optimize workout performance and enhance recovery. No other reason. Research supports the preference of pre-workout feeding in general, however, there is enough variability among individuals that I would never criticize anyone's individual choice.

Can a car run with an empty tank of gas? No. and Neither will you. It's best to eat BEFORE you workout. Your body needs fuel to function as well as perform intense workouts. Another girl just asked this and a guy that works out or at a gym was saying he seen some lady workout before she ate and she ended up fainting and breaking her jaw as well as a few teeth. Not trying to be rude .. Just tell it how it is. Use common sense everyone .. we don't need any injuries :-)

How do you know this happened to her because lack of food? she could have a pre-existing condition...how do you know? I've seen people, including myself get better results from not eating before a morning workout. It's not a bad thing to do. And FYI, my body isn't a car, you can't compare the two, we have fat reserves our body can draw from, when a tank is empty it's got nothing to draw from. If you want to debate the topic, have some actual data to back you up, and not "welll..a friend of a friend, saw someone who knocked her teeth out cause ..well...I think she didn't eat before she worked out. For some people it works, for others it doesn't your body will let you know.

Aerobically, the body can only work out at a maximum of about 60% of VO2 max if it is relying solely on fat as a fuel substrate. That's just a fact of beta oxidation. So, someone who is able to perform a hard workout, even in a "fasted" state, is still using the usual amount of carbs/glycogen. Just because you are "fasted" does not mean that your glycogen stores are depleted. Despite the cliches thrown about the subject, the vast majority of exercisers will not come close to using up their stored glycogen.

The body doesn't really care what you "want" to do or not. It is going to choose a fuel substrate mix based on the intensity demands of the exercise. High intensity = higher percentage of fuel from glucose/glycogen.

And the acute event of substrate utilization during a workout has little if any long-term effect on weight loss. A number of studies have shown that, in the 24 hour period following a workout, fat oxidation occurs inversely compared to the rate of fat oxidation during the workout--e.g. if you burn more fat during the workout, you will burn less during the post-workout period and if you burn less fat during a high-intensity workout, you will burn more during he post-exercise period--so it all evens out over time.

Pre and post-workout feedings should be designed to optimize workout performance and enhance recovery. No other reason. Research supports the preference of pre-workout feeding in general, however, there is enough variability among individuals that I would never criticize anyone's individual choice.