While loading carbohydrates before exercise can increase your performance, it is not a good option for weight loss. The high rate of carbohydrates in the body makes it impossible for the body to use stored body fat for energy.
So, if the purpose of your workouts is to stay slim, what you need to do is keep fasting. This advice comes from one of the most renowned personal trainer in the world. So, doing this while exercising is the secret to staying at your ideal weight.
Know your body
Throughout the day we find ourselves in and out of the "fed" and "fasted" states.
The fasting state lasts about four to six hours after your last meal. While your body releases insulin to lower blood sugar, your digestive system absorbs protein and fat. Glucose is also transported to the muscles to be used for energy (glycogen).
Six hours after eating you enter the fasting state. Glucagon is released to keep blood sugar at normal levels. Your body begins to break down adipose (fat) tissue into free fatty acids. These acids can then be converted into a form of energy known as ketone bodies. In simple terms, you are burning fat for energy.
As soon as you start eating, the fat burning process stops. Insulin now inhibits the breakdown of fatty acids, causing your body to burn newly ingested sugars. Thus, the fat burning stage comes to an end.
What should you do before exercising
Anyone used to a heavy carb load before training needs to adjust gently. It is advisable to start your training fasting and with light aerobic activities, such as walking, jogging or swimming.
At first, your training will seem much more difficult than before, but it is something that will change over time. As your body learns to use less glycogen and burn body fat for energy, it will become easier for you to exercise.
Once you get used to it, you will realize that there is no going back. Training with food in the stomach gives the feeling of heaviness and reduces agility. But there are some cases in which it is advisable to recharge carbohydrates previously, for example: a competition that requires a lot of effort. Although, they are true, many of us who opt for this type of training only hope to lose those extra pounds.