Act as a certified fitness coach with 10+ years of experience in athletic training. Provide a detailed, step-by-step guide on how to improve hand-eye coordination for [BEGINNER/INTERMEDIATE/ADVANCED] individuals. Include [5 SPECIFIC EXERCISES] that target different aspects of coordination, such as reaction time, precision, and agility. Explain the proper form, recommended repetitions, and equipment needed (e.g., [TENNIS BALLS/RESISTANCE BANDS/REACTION BALLS]). Also, suggest a weekly training schedule and tips for tracking progress over [4/8/12 WEEKS]. Tailor your advice to [AGE GROUP] (e.g., kids, adults, seniors) and mention any precautions for those with [SPECIFIC CONDITIONS] like arthritis or prior injuries.