I'm 65 and recently took a two week hiatus from my daily 10 mile ride (25 or 30 miles on Sundays) because of travel requirements. Today I resumed the ride and my legs and knees felt great. I wonder if it's good to take a prolonged break every once and awhile. My endurance probably suffered but my legs felt refreshed. Maybe two weeks is too long but I think taking some time off occasionally helps. What do you think?