I lost my focus last week and missed 2 runs and 2 strength work outs. This happens from time to time. I'm 10 weeks out from my 64'th. Physical fitness is the foundation upon which all mental and physical health rests. I cannot honestly claim injury or fitness. It was just loss of will and focus. I don't know why the wheels sometimes just come off. No excuse. I'm 151.7 lb. 16% body fat by impedance measure. This is too high. 

In wonderful Stoic Spartan manner:

"You should pray for a healthy mind in a healthy body.
Ask for a stout heart that has no fear of death,
and deems length of days the least of Nature's gifts
that can endure any kind of toil,
that knows neither wrath nor desire and thinks
the woes and hard labors of Hercules better than
the loves and banquets and downy cushions of Sardanapalus.
What I commend to you, you can give to yourself;
For assuredly, the only road to a life of peace is virtue." 

Juvenal 

I lose my identity when I do not train. I flush into the pool of the indulgent lumpen consumers.