Learning a new language makes the brain grow, according to researchers who studied young recruits at the Swedish Armed Forces Interpreter Academy by measuring the brains of participants before and after the language training.
There's also evidence that suggests learning a second language can reduce the likelihood of Alzeihmer's onset.
There's growing evidence that contiuous lifelong learning is healthy for you and your brain. It's exercise for your brain.
If you want to learn a language, why not try duolingo.com - it's a free effective language learning tool. (it won't work on our network so wait till you get home)