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