Exercising while fasted??

3rdof7sisters

As so many have said, it is really a personal preference.
I always go to the gym first thing in the morning, before I eat. I have a bottle of water with me. I eat when I get to work. It makes me nauseous when I exercise after eating.

sijomial

The one thing fasted exercise will do is make you better at fasted exercise - whether that has any benefit is individual.
For people doing endurance cardio it may well be useful to reduce need to fuel during an event.

sijomial

kaizaku wrote: »

Lois_1989 wrote: »

I'm going to echo quite a few people here, I swim fasted, but I can't weight lift fasted. I go lightheaded.
I guess it's A.) down to preference and B.) Ok for cardio, not so much for strength-training.

kaizaku wrote: »

Its good. I did it last year and will do it again soon. Let's say, you ate on the previous day around 8pm. By the morning your stomach will be empty. When you train, your body has no food(carbs) for energy. So it uses your fat source for energy. Rather the norm it uses carbs, so on an so forth for energy.

The bolded isn't so true. Anyone doing Keto or LCHF will tell you it takes about 2 weeks for your body to become fat-adapted. Meaning your body burns fat for fuel. In the morning you are still using carb reserves and/or protein.

I knew a smart *kitten* will pop up.

glycogen, a type of carbohydrate that our bodies store, “runs out” overnight. When you wake up and hit the gym first thing in the morning, because your body is low on carbs, the idea is that the body will turn to fats next to gain energy.

You don't have to believe what I say, you just religiously hold tight with your opinion.

No glycogen doesn't run out overnight - you are predominately running on fat while you sleep.
Exercise intensity is by far the biggest factor in what ratio of carbs/fat you use whether you are fasted or fed.

Lois_1989

sijomial wrote: »

kaizaku wrote: »

Lois_1989 wrote: »

I'm going to echo quite a few people here, I swim fasted, but I can't weight lift fasted. I go lightheaded.
I guess it's A.) down to preference and B.) Ok for cardio, not so much for strength-training.

kaizaku wrote: »

Its good. I did it last year and will do it again soon. Let's say, you ate on the previous day around 8pm. By the morning your stomach will be empty. When you train, your body has no food(carbs) for energy. So it uses your fat source for energy. Rather the norm it uses carbs, so on an so forth for energy.

The bolded isn't so true. Anyone doing Keto or LCHF will tell you it takes about 2 weeks for your body to become fat-adapted. Meaning your body burns fat for fuel. In the morning you are still using carb reserves and/or protein.

I knew a smart *kitten* will pop up.

glycogen, a type of carbohydrate that our bodies store, “runs out” overnight. When you wake up and hit the gym first thing in the morning, because your body is low on carbs, the idea is that the body will turn to fats next to gain energy.

You don't have to believe what I say, you just religiously hold tight with your opinion.

No glycogen doesn't run out overnight - you are predominately running on fat while you sleep.
Exercise intensity is by far the biggest factor in what ratio of carbs/fat you use whether you are fasted or fed.

.... I knew I should sleep more! All these stupid early morning gym sessions.

Rajions

Thanks everyone for your comments! I have noticed, upon thinking about it, that I get slightly light-headed while doing Insanity in the fasted state. But I still finish the workout burning an average of 400 calories. I had a banana this morning before I did the workout and actually felt better. So I guess, for me, I should eat a little something before doing heavy cardio like that.