I wrote in the introduction ten years ago, when I initially published this journal: I will turn 68 this summer and fitness is a relative concept. Fit at 68 looks different than fit at, say, 38. 

I can only say fit at 78 looks a lot different than fit at 68 did. So be it. We are still taking the hills as they come - but with a slight difference. We are riding e-bikes now. Who shall be the first to cast a stone? We are still cycling and loving life.