Can You Study Two Languages at the Same Time?

You can read the manga and that's good for the vocab, right? Because you can go slowly use a dictionary. Then you watch the anime because then you get the voices,. You get the audio, the pronunciation, the natural speaking. That's a great combination when you can get both of those. Maybe it's not too bad to study two languages in the beginning if those languages are close, like Spanish and Italian. But Spanish and Thai from zero at the same time a bad idea.