Xabier (@xaviermuba) - Collective Profile | Bilbao, ES Medical Doctor at SERMAS. Physician by vocation. Passionate about medicine, science, and lifelong learning. I collaborate with NGOs and believe in purpose, service, and growth. Follow @xaviermuba on Instagram. Recent posts: a close-up portrait of a man with dark hair and stubble, looking directly at the camera., a man with dark hair and stubble looks over his shoulder while submerged in a pool of water. the lighting is dramatic, highlighting his muscular physique., a man with dark hair and a beard takes a selfie in front of a mattress., a man with dark hair and stubble takes a selfie while lying down., a man with stubble and sunglasses takes a selfie in the driver's seat of a car., a man with dark hair and stubble poses for a selfie against a dark background, resting his head on his hand..