I want to work out while in Sevilla and meet Spaniards along the way!

Spaniards don’t often work-out outdoors. They prefer to go to gymnasiums where they can, not only lift weights, but also participate in other activities such as:
aerobics, boxing, pilates, etc.. Working out at a nearby gym is a
great idea, not only to get fit, but also to socialize with locals.
The majority of them go to the gym after work around 8.00pm to 11.00pm
Spaniards have dinner much later than most so this is the way they do it.

If you live in the city center here is a great suggestion:

Gimnasio Cuesta-Sport: Cuesta del Rosario Nº 8, Pasaje
41004 Sevilla
955 06 97 23