This question is to help with the speaking exam for GCSE. It is a very common question asked by examiners as it allows the student to show off vocabulary that they have learnt and allows different tenses to be used. It is a good way to asses the level of someone's confidence speaking in Spanish. I would encourage a student to prepare answers to broad questions like this using several tenses and advanced vocabulary.My example answer would be something like: Me gusta jugar al fútbol en mi tiempo libre porque es una buena manera de mantenerme en forma y hacer nuevos amigos.