gimnasia
/ximˈnasja/ · B2 · noun · f
gymnastics
🤸 gimnasia = gym + nasia, the gym sport; Greek gymnos 'naked' (trained unclothed)
Spanish gimnasia comes from Greek gymnasia, from gymnos meaning naked, because ancient Greeks trained without clothes. The same root gives gimnasio (gym) and English gym. Spot the 'gim' start and you get gymnastics.