Lesson 3 How Our Body Works
Timing is Everything
____ back to Today’s Health. Today we’re going to be talking about exercise.
Dr. ____ Hill is here, and she is going to share some useful tips.
So, Dr. Hill, let’s start with a question about my experience last ____.
I worked out ____ after dinner and got a stomachache. Why did that happen?
Well, the problem is that you exercised too ____ after eating.
This can cause various stomach ____.
When you eat, blood rushes to the digestive system to ____ break down the food and absorb its nutrients.
But ____ you start to exercise, blood moves from the digestive system to your muscles.
This happens in order to supply your ____ with the oxygen and nutrients they require.
As a result, the ____ process is paused until the blood returns.
So, whether you’re lifting weights or going for a jog, you shouldn’t do it with a stomach ____ of food.
I see. That makes sense. So, ____ that mean I should exercise on an empty stomach?
No, it ____ That can also be harmful and unpleasant.
This is because the body ____ energy to exercise.
The fuel that provides this ____ is glycogen.
Carbohydrates in the food we eat are broken down ____ a kind of sugar called glucose.
When this glucose is stored in parts of the body, such as the muscles and the liver, it is called ____.
This is why exercising on a completely empty stomach—such as when ____ first wake up in the morning—can be such a challenge.
Your blood sugar levels are low, and you don’t have enough glycogen stored in your ____.
If you exercise on an empty stomach, you will most likely lack energy and feel ____ tired.
There ____ also be more serious outcomes.
____ people end up suffering from nausea and headaches, and others even faint.
This is because intense exercise uses up all the glycogen in your ____.
Host
So, is it the loss of ____ that causes us to have low levels of energy?
That’s correct. For this reason, doctors recommend that people eat food ____ carbohydrates within thirty minutes after working out.
This replaces the ____ glycogen you have lost.
Basically, ____ need between one and one and a half grams of carbohydrates for every kilogram you weigh.
Let’s do the math. If you weigh 60 kilograms, you should ____ to consume between 60 and 90 grams of carbohydrates after you exercise.
This is equal to about one bowl of white rice or ____ bananas.
That’s very interesting. But what about ____ before we exercise?
Can you explain how long we should wait ____ eating?
Well, as I said before, exercising right after you ____ will cause feelings of discomfort.
But, if you wait too long to exercise after eating, you’ll ____ from a lack of energy.
The best time to ____ before you exercise varies from one to three hours.
Basically, it depends on several factors such as the type and ____ of food as well as body size, age, and gender.
The ____ of exercise also matters.
For extremely active exercise like cycling, I suggest that you wait between one and a half and three ____ after eating a moderate-sized meal.
But for something more casual, such as golfing, waiting for ____ hour after a meal should be enough.
Clearly, you ____ wait less after eating a snack.
Thank you very much for this ____ information, Dr. Hill.
I’m sure it will be ____ helpful for all of our viewers.