Mi amiga suele sudar en el gimnasio, pero luego se ducha enseguida.

Suele comes from the verb soler, which is used to talk about something that usually or tends to happen.

So:

• suele sudar = usually sweats / tends to sweat

After soler, Spanish uses an infinitive:

• suelo estudiar = I usually study
• suelen comer tarde = they usually eat late
• mi amiga suele sudar = my friend usually sweats

So the pattern is:

• soler + infinitive

Because mi without an accent is the possessive adjective meaning my.

• mi amiga = my friend

mí with an accent is a pronoun meaning me, used after prepositions:

• para mí = for me
• a mí = to me

So in this sentence, it must be mi amiga because it shows possession.

Yes. Amiga is the feminine form, and it means a female friend.

• amigo = male friend
• amiga = female friend

Since the sentence says mi amiga, we know the friend is female. That also matches the later pronoun se in se ducha, referring to her.

Because sudar depends on suele.

With soler, the second verb stays in the infinitive:

• Ella suele sudar
  not
• Ella suele suda

This is similar to English usually + verb, although Spanish expresses it with a conjugated verb (soler) plus an infinitive.

So:

• Mi amiga suele sudar = My friend usually sweats

In Spanish, the present tense is often used for habitual actions, just like in English.

• Mi amiga suele sudar en el gimnasio = My friend usually sweats at the gym
• Luego se ducha enseguida = Then she showers right away

This is normal present tense describing a routine or repeated habit, not just something happening right now.

In this sentence, sudar is not reflexive.

• sudar = to sweat

So:

• Mi amiga suele sudar = My friend usually sweats

The reflexive form sudarse exists in some contexts, but it does not mean the basic everyday to sweat here. For a learner, the important point is:

• use sudar for to sweat
• use ducharse for to shower oneself

So only the second verb in the sentence is reflexive.

Because en means in or at, and here the sentence is talking about the location where she sweats.

• en el gimnasio = in/at the gym

You would use al gimnasio if you were talking about movement toward the gym:

• Va al gimnasio = She goes to the gym

But here she is already there, so en el gimnasio is the correct choice.

The verb is ducharse, which means to shower oneself.

So:

• ducharse = to take a shower / to shower

When you conjugate a reflexive verb, the reflexive pronoun changes:

• me ducho = I shower
• te duchas = you shower
• se ducha = he/she showers
• nos duchamos = we shower

In this sentence, se refers back to mi amiga:

• mi amiga se ducha = my friend showers

Usually, for the meaning she showers, Spanish uses the reflexive form:

• se ducha

Without se, duchar is generally transitive, meaning to shower someone:

• La madre ducha al niño = The mother showers the child

So:

• se ducha = she showers herself
• ducha a alguien = she showers someone

That is why se is necessary here.

Here luego means then or afterwards.

• pero luego se ducha = but then/afterwards she showers

In many cases, luego and entonces can both translate as then, but luego often emphasizes what happens next in time.

• Primero hace ejercicio, luego se ducha. = First she exercises, then she showers.

So luego fits very naturally in this sentence because it marks the next action.

Enseguida means right away, straight away, or immediately.

So:

• se ducha enseguida = she showers right away

It suggests there is very little delay between sweating at the gym and showering.

Other similar words are:

• inmediatamente = immediately
• al momento = right away
• ahora mismo = right now

But enseguida is very common and natural in everyday Spanish.

The comma is used because pero means but, and it connects two clauses:

• Mi amiga suele sudar en el gimnasio
• pero luego se ducha enseguida

This is similar to English, where a comma is often used before but when joining two full clauses.

So the punctuation helps separate the two ideas clearly:

1. she usually sweats at the gym
2. but then she showers right away

No, not directly. The sentence only says that she sweats at the gym and then showers right away.

• en el gimnasio tells you where the sweating happens
• it does not explicitly say she goes there

If you wanted to say she goes to the gym, you would need:

• Va al gimnasio

So you should not assume that en el gimnasio itself means goes to the gym.

Yes, enseguida is very common and natural in Spain. A learner of Spanish from Spain will hear it often in everyday speech.

For example:

• Voy enseguida. = I’m coming right away.
• Lo hago enseguida. = I’ll do it right away.

In this sentence, it sounds very natural in Peninsular Spanish:

• se ducha enseguida

So it is a useful word to learn early.