To personalize workout routines, the first step is to collect relevant guest data. You can use reservation systems to ask guests to fill out a pre-arrival survey or questionnaire about their fitness level, interests, goals, and any special needs or limitations. Additionally, you can infer some of their preferences and expectations from booking details such as length of stay, room type, and travel purpose. You can also use loyalty programs to track guest behavior, such as frequency of visits, spending patterns, feedback, and preferences. Offering incentives like points, discounts, or free services can encourage guests to share more data with you. Monitoring social media profiles and activities can give insight into guest personality, lifestyle, and opinions. You can also use social media to interact with guests by asking questions, sending tips, or inviting them to join online communities or events. Wearable devices like fitness trackers, smart watches, or heart rate monitors can collect and transmit data about physical activity, health, and performance. Integrating your devices with guests' own apps or devices like Fitbit or Apple Health can provide more data and insights.