While the baths would have stimulated your body, they also could stimulate your mind.
A half-stadium at the baths probably served as a place Romans could sit and watch their favorite entertainment. Some Romans might have chosen to watch a display of juggling or gymnastics, or to listen to the sounds of jesters or musicians. Others might have attended a discourse by a philosopher or a poetry reading.
The midday Mediterranean sun might have been all you needed. Some rooms at the public baths had unglazed windows—the place to go if you wanted nothing more than to sunbathe your way to a tan.