What Happens To Your Body When You Don't Eat Breakfast?
不吃早餐對你的身體有何影響?

@Craig Good

You can't skip breakfast. It's the first meal you eat in the day, no matter when it is.
你不可以不吃早餐。這是你每一天的第一餐,不管你什么時候吃。

If you're wondering what happens if you don't eat soon after awaking, the answer is usually not much. For some people it causes overeating behavior later in the day, and other people get some benefits in things like energy and concentration. But there's nothing particularly important in general about what time you eat or how many meals you take in a day.
如果你在想像如果醒來之后不吃早餐會導致什么后果,通常答案是“沒什么”。對于一些人來說,可能會導致在今天剩下的時間里暴飲暴食,而有些人會從中得到活力甚至注意力更加集中。但是關于你什么時候吃或者一天之內吃幾餐其實并不重要。

@Akash Sehrawat

Technically speaking
從技術上來說,

‘Breakfast’ is the first meal of your day, irrespective of what time you have it!
早餐時你每天的第一餐,和你什么時候開始吃無關。

But, speaking from a conventional point of view, usually people associate having a meal between 7am to 10am as their breakfast.
但是,從傳統角度來看,通常人們在早上七點到十點之間吃早餐。

So, in those terms I haven't had my breakfast for past many years now (I think 4+ now).
即使這么說,我也已經好多年沒吃早餐了(我想應該有四年多了)

If you have heard about the concept of Intermittent Fasting which suggests eating in a limited window of time. IF can be done in various way.
如果你曾經聽過間歇性禁食,提倡在有限時間內進食。間歇性禁食可以有多個方式。

I prefer to eat between 12pm to 8pm. Then I typically fast from 8pm until 12pm the next day.
我喜歡在晚上12點到晚上八點吃東西,然后我將在翌日晚上8點到晚上12點禁食。

The only thing that I do have during the fasting period is:
在禁食期間我只會喝:

-Black Coffee
黑咖啡

-Matcha Tea
抹茶

-Vegetable Juice
蔬菜汁

 @Susan Michelle

In a recent survey by the National Weight Control Registry, people who ate breakfast were more successful with long-term weight loss than those who regularly skipped the first meal of the day.
據國家體重控制管理局調查表明,吃早餐的人會比經常不吃早餐的人減肥效果更加顯著。

Taking breakfast helps your metabolism and can help prevent overeating later on. Additionally, a healthy first meal has been linked to boosted brainpower and mental performance throughout the day.
吃早餐有助于你的新陳代謝,預防你過后吃過多。另外,健康的第一餐將促進智能、腦筋反應力發揮一整天。

@Sam

If you don't eat breakfast you'll experience body weakness. If you keep skipping the former then there's no point in having a heavy lunch you gotta eat something after waking up to avoid weakness
如果你不吃早餐,你將感受到一股四肢無力的感覺。如果你一直不吃早餐,即使你午餐吃得再豐盛,也喚不醒身體的無力感。

P.S: I had been skipping breakfast for like 2 years I experienced body weakness and some sharp pain in heart periodically. 
附言:我曾不吃早餐長達2年,切身感受到身體無力感以及定期強烈的心痛感。

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