If you run across some of the other 50+ stories you'll learn that many of us returned "late in life" like you. I took up cycling again at the young age of 55. I'm now 70. Get out there and just have fun.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.