Is the strength and performance coach of the ShowUp Mentorship program, bringing a science-based, high-standard approach to physical development in basketball. With a background in Physical Education and Sports Science and over 7 years of hands-on experience, Marios has worked with competitive environments such as Promitheas Chalandriou, Maroussi BC, and Galatsi BC, combining on-court basketball understanding with elite performance training principles. Certified in Sports Performance by NASM, he specializes in building athletes who are not only stronger, faster, and more explosive, but also more durable and resilient throughout a long season. His work focuses on translating strength training into real basketball performance—improving movement efficiency, injury prevention, and long-term athletic progression. At ShowUp, Marios is responsible for ensuring that every athlete develops the physical foundation required to train harder, perform consistently, and sustain high-level habits over time.