If you would like to study Spanish during your stay, you have options: small group lessons or private one-on-one lessons.
BCN LIP is a great Spanish learning school as an option.
Gyms & Yoga
ClassPass (https://classpass.com/search/barcelona/fitness): Buy credits allow you to book at thousands of different yoga studios, gyms, pilates studios, & spas. Use them however you like in order to create a personalized fitness and wellness routine.
Viva Gym has several locations in Barcelona and depending on the monthly pass you chose, gives you access to many of them.
The cost is 33€ Euros for one month membership. This includes use of machines and entry into some classes.
Metropolitanis a gym located near Plaça Espanya in Las Arenas
The exact address is Gran Via de les Corts Catalanes, 373
Metropolitan offers a premium club with more included than just fitness and allows for access to their other clubs.
Yoga Studio: (https://estudiodeyoga.com/) This yoga studio is centrally located in Plaça Universitat, right in the heart of the Eixample neighborhood. You can purchase individual classes or bundles of classes.
Pharmacies
Many pharmacies in Barcelona have staff that speak some English.