Lesson 3 How Our Body Works
Timing is Everything
Welcome back to Today’s ____. Today we’re going to be talking about exercise.
Dr. Victoria Hill is here, and she is going to share some useful ____.
So, Dr. Hill, let’s start with a question about my experience last ____.
I worked out right after dinner and ____ a stomachache. Why did that happen?
Dr. Hill: Well, the problem is
Well, the problem is that you ____ too soon after eating.
This can ____ various stomach issues.
____ you eat, blood rushes to the digestive system to help break down the food and absorb its nutrients.
But when you start to exercise, blood moves from the digestive ____ to your muscles.
This happens in order to supply your muscles with the oxygen and nutrients they ____.
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 full of ____.
Host: I see. That makes sense.
So, does that ____ I should exercise on an empty stomach?
No, it ____ That can also be harmful and unpleasant.
This is because the ____ needs energy to exercise.
The fuel that provides this energy is ____.
Carbohydrates in the ____ we eat are broken down into a kind of sugar called glucose.
When this glucose is stored in parts of the body, such as the ____ 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 morning—can be such a ____.
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 ____ and feel unusually tired.
There ____ also be more serious outcomes.
Some ____ end up suffering from nausea and headaches, and others even faint.
This is because intense exercise ____ up all the glycogen in your muscles.
Host: So, is it the loss of glycogen
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 containing carbohydrates within ____ minutes after working out.
This replaces the muscle ____ you have lost.
Basically, you need between one and one and a half grams of carbohydrates for every kilogram you ____.
Let’s do the math. If you ____ 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 ____ before we exercise?
Can ____ explain how long we should wait after eating?
Well, as I said before, exercising right after you eat will ____ feelings of discomfort.
But, if you wait too long to exercise after eating, you’ll suffer from a ____ of energy.
The best time to eat before you exercise varies ____ one to three hours.
Basically, it depends on several factors ____ as the type and amount of food as well as body size, age, and gender.
The type of exercise also ____.
For extremely active exercise like ____, I suggest 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 a meal ____ be enough.
Clearly, you can wait less after eating a ____.
Thank you very much for this fascinating ____, Dr. Hill.
I’m sure it will be very helpful for all of our ____.