Have you ever wondered why you feel very tired after an online meeting or classroom session，when you might not feel the same if the meeting was being held with everyone in the same room？This effect，nicknamed "Zoom fatigue"，is felt not just by students but by grown-ups as well，who are getting tired by video meetings as they work from home.
    Now，a US scientist says he has identified four key reasons why video calls can be so exhausting.Jeremy Bailenson，from Stanford University in California，has spent more than 20 years looking at how different forms of online communication can affect people.He says the first reason video calls can feel tough is because people are constantly making eye contact with each other as they look down at their cameras.In normal meetings or classes，people are usually just looking at the speaker but during a video call everyone seems to be staring at everyone else.What's more，they can often seem uncomfortably close.
    A second reason for fatigue may be that people are spending a lot of time looking at themselves on camera.Bailenson compared this to being followed around a school or workplace by someone holding up a mirror.Previous studies have suggested that staring into mirrors can make people feel more critical about themselves and doubtful of their abilities.
    Working from home also means that many people aren't moving as much as they used to.Studies have shown that people can think more creatively while moving around but online meetings force people to sit still so they can stay on camera.
    Bailenson's final reason is that it is more difficult to understand people's body language on a video call.With such a limited camera view，our brains have to work extra hard to interpret other people's gestures and expressions，and that can be very tiring.

（1）What is "Zoom Fatigue"？（不多于9個單詞）

Feeling tired after an online meeting or classroom session.

Feeling tired after an online meeting or classroom session.

（2）How many reasons are identified for "Zoom Fatigue" in the passage？（1個單詞）

Four.

Four.

（3）According to previous studies，how can staring into mirrors make people feel？（不多于9單詞）

More critical about themselves and doubtful of their abilities.

More critical about themselves and doubtful of their abilities.

（4）In your opinion，how can one avoid "Zoom Fatigue"？ （單詞數(shù)不限）

In my opinion，to avoid "Zoom Fatigue"，use your phone when necessary，allowing yourself to move around，doodle or sit outside in the sun.

In my opinion，to avoid "Zoom Fatigue"，use your phone when necessary，allowing yourself to move around，doodle or sit outside in the sun.