"Nice to see you're getting back into cycling after a 15-year hiatus! Given your current weight and age, it's crucial to focus on building your cardiovascular endurance and increasing your power-to-weight ratio. I'd recommend starting with shorter, more frequent rides to build up your stamina, and gradually increasing your distance and intensity over time. Additionally, consider incorporating strength training exercises to improve your overall muscle mass and reduce your risk of injury. Remember to also pay attention to your bike fit and ergonomics to optimize your performance and comfort on the road."
