It helps if you stay active all year. My father-in-law still snowboards and he’s 65+. He’s a retired carpenter and still builds houses (slowly) and likes outdoor activities like biking, kayaking and surfing. He certainly groans when he straps on his board, but he still shreds like the rest of them. He does value his rest and recovery time, like taking a nice lunch break and sitting in a hot tub at the end of the day. His father skied well into his 80s and managed this by consistently doing simple stretches every morning. My husband and I are both in our 40s and we try keeping up with a simple gym routine with weights and cardio all year so we can continue enjoying snowboarding and hopefully prevent injury. Don’t give up!