After studying Portuguese at university and speaking it occasionally while working in tourism with Brazilian travelers, my Portuguese was still pretty elementary. I could understand quite a bit and get through a conversation, but I had never really had the chance to use the language consistently.
Last year, that changed when I had the opportunity to spend a few months in Brazil. After about two months in São Paulo, I realized I had reached a point where I could actually function in Portuguese. I could meet people, make friends, go on dates and have long conversations without constantly thinking about the fact that I was speaking another language.
But there was a limit. After an hour or two, I would start getting tired. Following the conversation required more effort, words became harder to find and I slowly lost the energy to explain things or keep a conversation going. Eventually, I would reach a point where I simply couldn’t process another sentence in Portuguese.
It wasn’t that my Portuguese had suddenly gotten worse. I could still speak it, and I hadn’t forgotten anything I knew. I was simply exhausted from using it.
I only learned later that there was a name for what I had experienced: language fatigue.
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What is language fatigue?
What I was experiencing in Brazil was the exhaustion that can come from using another language for an extended period of time. Even though I could communicate somewhat comfortably in Portuguese by then, doing it for hours still required more mental effort than having the same conversations in my first language.
When you’re using a language that hasn’t become fully automatic yet, you’re doing a lot of work at the same time. While following a conversation, you’re interpreting meaning and tone, retrieving vocabulary, choosing grammatical structures and building your own response, often while the other person has already moved on to the next part of the conversation.
At an intermediate level, you may be able to do all of this quickly enough to communicate naturally. You understand what’s happening, respond appropriately and keep the conversation moving. But quickly doesn’t necessarily mean effortlessly. Some of those processes still require conscious attention, and sustaining them for a long period of time can be exhausting.
That’s language fatigue: you can be communicating successfully while gradually becoming mentally exhausted by the amount of processing involved in doing it.
Why does language fatigue happen as your Spanish improves?
It can seem strange to start noticing this kind of exhaustion precisely when your Spanish is getting better. But improving your Spanish changes not only how well you can use the language, but also how much you can use it.
When your Spanish is elementary, there is a limit to how long and how deeply you can interact in it. You might order food, ask for directions, have a short conversation or complete a specific task in Spanish, but eventually the interaction ends or you need to switch languages.
As you become more proficient, those limits begin to disappear. You can spend an afternoon with Spanish-speaking friends, go on a date, join a group conversation, solve a problem at your hostel or have dinner without switching back to your first language. Instead of using Spanish for isolated interactions, you can start living parts of your life in it.
And that means you’re now able to sustain for hours the kind of mental effort that used to be limited to much shorter interactions.
Research on second-language fatigue is still relatively limited, but proficiency appears to be an important part of the picture. Recent research on listening-related fatigue in a second language found that people with lower and moderate proficiency experienced more fatigue as their use of the language increased.
So the contradiction is only apparent. Your Spanish hasn’t become more tiring because you’ve improved. You’ve become good enough at Spanish to use it for long enough to get tired.
The good news: your Spanish is already functional
If you’re experiencing language fatigue, there’s actually some good news in it: you’ve already reached a functional level of Spanish. You’re able to use the language for long enough, and extensively enough, to get tired from using it.
What does language fatigue actually feel like?
Language fatigue doesn’t always arrive as a clear moment when your brain suddenly switches off. More often, you start noticing that things that were easy at the beginning of a conversation are becoming harder. You lose concentration, need more time to retrieve words or find yourself asking someone to repeat something you probably would have understood an hour earlier. The mental exhaustion can also be accompanied by physical tiredness and, for some people, symptoms such as headaches, or even nausea.
But one of the more subtle signs is that you start rationing how much you’re willing to communicate.
Imagine you’re having a beer with a group of people and someone tells a story that reminds you of a hilarious anecdote. You know the story and you know enough Spanish to tell it. But then you think about everything involved in telling it properly. You have to explain the context, find a couple of words you’re not completely sure about and somehow preserve the timing that makes the story funny.
Suddenly, a two-minute anecdote feels like a monumental amount of work, so you decide not to tell it.
That’s something I’ve noticed many times when speaking another language. It’s not necessarily that I can’t express what I want to say. Sometimes I simply reach a point where explaining it no longer feels worth the effort. I shorten an answer, leave out a detail or let a story pass because I don’t have the energy to build it in another language.
Language fatigue can therefore change the way you participate in a conversation before it stops you from communicating altogether. You’re still understanding and you’re still speaking, but you begin choosing which thoughts are worth the effort of expressing.
Learn to be resourceful
One of the things that was emphasized over and over again when I trained as an over the phone interpreter was the importance of being resourceful. Knowing a language was obviously essential, but knowing how to make the language you already had work for you was treated as almost equally important.
In real conversations, you won’t always have the exact word you want. Sometimes the sentence you started building turns out to be more complicated than you expected. Sometimes you know perfectly well what you want to say but can’t find the most precise way to say it quickly enough.
Being resourceful means finding another route. You describe the word you don’t know, reformulate the sentence, split a complicated idea into two simpler ones or use a broader word that gets the meaning across. And yes, sometimes you gesture.
I once met a French woman while traveling and we started talking about typical food from Patagonia. I wanted to tell her about cordero. She didn’t understand the Spanish word, so I tried lamb in English. Nothing.
Eventually, I just went “meee.”
She understood immediately.
It’s a ridiculous example, but that’s exactly the point. The objective of communication isn’t to demonstrate every word and grammatical structure you know. It’s to make yourself understood with the resources available to you.
That becomes even more useful when you’re tired. Instead of spending unnecessary energy searching for the perfect word or constructing the most elegant sentence, you can choose an easier route. You may lose a little precision or nuance, but you keep the conversation moving and save your mental energy for the moments when that precision actually matters.
Does language fatigue go away?
The key to reducing language fatigue is automaticity. As you improve your Spanish, more and more of the processes that currently require conscious effort become automatic. You stop having to think so much about familiar structures, words come to you more easily and building a response requires less work. The less effort your brain has to put into using Spanish, the less exhausting it becomes.
There is also some research suggesting that there may be a kind of tipping point after experiencing language fatigue. This suggests that this stage may be an important transition toward using the language more fluently.
That makes this a particularly useful stage to consolidate the Spanish you’ve learned so far. This is where putting in some extra work can really help you move from simply being able to use Spanish to feeling increasingly comfortable using it.
Ready to take the next step?
If you’ve reached this point and want to take your Spanish further, I can help you turn what you already know into Spanish that comes more naturally when you actually need it.
My one-on-one classes are built around your level, your gaps and the situations where you want to use the language, so we can focus that extra work where it will make the biggest difference. Book a free consultation and let’s figure out what your next step should be.