Stop right there!
If you are not fifty, or at least forty, go no further.
Now ask yourself if, when you get up in the morning, are you feelin' it?
Or, maybe, after you have been sittin' in a chair for a long time or driving across country and you stop to get out and gas up, are you feelin' it?
For a hoot, listen to Leonard Cohen's Tower of Song on youTube.