meorikaragi gireoseo undonghal ttae mukkeoyo.

머리카락 means hair specifically, while 머리 usually means head.

So:

• 머리카락이 길어요 = My hair is long
• 머리가 아파요 = My head hurts

In everyday Korean, people sometimes do use 머리 to talk about hair, depending on context, but 머리카락 is more specific and clear here because the sentence is talking about long hair.

The particle 이/가 marks the subject.

Here, 머리카락이 길어서 means because my hair is long or literally hair is long, so...

The important idea is that 머리카락 is the thing being described as long, so it takes the subject marker:

• 머리카락이 길어요 = Hair is long

If you used 머리카락을, that would mark it as an object, which would not fit with 길다.

길어서 comes from 길다 (to be long) + -어서.

So:

• 길다 = to be long
• 길어서 = because it is long / being long, so...

In this sentence, -아서/어서 connects the reason to the result:

• 머리카락이 길어서 운동할 때 묶어요
• Because my hair is long, I tie it up when I exercise

A very natural translation is:

• My hair is long, so I tie it up when I exercise.

-아서/어서 is a very common way to say because or so in Korean.

It links:

• a cause/reason to
• a result/action

So here:

• 머리카락이 길어서 = because my hair is long
• 운동할 때 묶어요 = I tie it up when I exercise

Together:

• Because my hair is long, I tie it up when I exercise.

This ending often sounds very natural and conversational.

The dictionary form is 묶다.

묶다 means:

• to tie
• to tie up
• to bind

In the context of hair, it means to tie one’s hair up.

So:

• 머리를 묶어요 = I tie my hair up
• 머리카락이 길어서 운동할 때 묶어요 = Because my hair is long, I tie it up when I exercise

Because Korean often omits things that are already understood from context.

The sentence already mentions 머리카락 at the beginning, so the listener can easily understand what is being tied.

So this is natural:

• 머리카락이 길어서 운동할 때 묶어요

If you wanted to make the object explicit, you could say:

• 머리카락이 길어서 운동할 때 머리를 묶어요
• 머리카락이 길어서 운동할 때 머리카락을 묶어요

But repeating 머리카락 sounds less natural. Korean often avoids unnecessary repetition.

Korean very often leaves out the subject when it is obvious from context.

So instead of saying:

• 저는 머리카락이 길어서 운동할 때 묶어요

you can simply say:

• 머리카락이 길어서 운동할 때 묶어요

The meaning I tie it up is understood naturally.

This is one of the most common features of Korean, and English speakers often notice it quickly.

운동할 때 means when exercising or when I exercise.

It is made from:

• 운동하다 = to exercise
• 운동할 = the future/attributive form used before a noun
• 때 = time / moment / when

So literally, it is something like:

• the time when (I) exercise

This pattern is very common:

• 밥 먹을 때 = when eating / when I eat
• 잘 때 = when sleeping / when I sleep
• 공부할 때 = when studying / when I study

With 때, Korean often uses the -ㄹ/을 때 form very naturally to mean when doing something.

So:

• 운동할 때 = when exercising

You may also see forms like 운동할 때마다 (whenever I exercise), which use the same base.

For learners, the key point is:

• memorize verb stem + -(으)ㄹ 때 as a common pattern for when doing X

Even if -는 때 can appear in some contexts, -ㄹ/을 때 is the standard and most useful pattern to learn first.

In Korean, the present tense often covers:

• present actions
• general truths
• habitual actions

So 묶어요 can mean:

• I tie it up
• I usually tie it up
• I tie it up when I exercise

That habitual meaning comes from context, especially from 운동할 때 (when I exercise).

English often uses I tie it up or I tie it up when I work out, and Korean works similarly here.

Yes, in real conversation you may hear 머리가 길어서 too.

That would also be understood as:

• Because my hair is long...

Even though 머리 literally means head, Korean sometimes uses it in contexts where English would say hair.

Still, 머리카락이 길어서 is more precise, because it clearly refers to the hair itself.

So:

• 머리가 길어서 운동할 때 묶어요 = natural in speech
• 머리카락이 길어서 운동할 때 묶어요 = more specific and explicit

Not exactly.

묶어요 simply means tie (it) up. It does not specify the hairstyle.

It could mean:

• tying it in a ponytail
• tying it into a bun
• tying it back in some way

So the safest translation is:

• I tie my hair up or
• I tie it back

If you want to specify the style, Korean would need more detail.

In many cases, -아서/어서 can sound like either:

• because
• so
• a natural connection between two facts

Here, the most natural meaning is clearly causal:

• My hair is long, so I tie it up when I exercise

So while a very literal breakdown may not always require the word because, the relationship here is definitely reason/result.

묶어요 is pronounced roughly like 무꺼요.

Why? Because the final consonant and the following vowel cause a sound change.

So:

• spelling: 묶어요
• natural pronunciation: 무꺼요

This kind of pronunciation change is very common in Korean, so it is worth getting used to seeing one spelling but hearing a slightly different sound.