It's the "day after" feeling -

the "flat" feeling, the "it's all over" feeling. 
Yes, I know. 
The Senior Cat prowled out earlier than I expected yesterday morning - although a little later than is normal for him. He admitted he still felt tired after the festivities. 
    "I think we all will," I told him. He reminisced for a few minutes and then went to eat some breakfast before my brother and his partner arrived to say goodbye before they flew back to their home in another state. They were reluctant to go and he was even more reluctant to see them go. 
The Senior Cat prowled restlessly around, got underfoot and couldn't settle to anything. I gave him some lunch and told him, "Go and have a catnap."
Good idea. He went off...and of course the 'phone rang. It was Middle Cat, younger nephew was at home. Could he "swing by" and see the Senior Cat before he left to go back interstate as well?
Of course. 
I roused the Senior Cat and said, "You can go back to your catnap afterwards."
Nephew arrived with his girlfriend in tow. She's been around for a while now. Serious? I don't know - but she did call him "Papa" this time. Another wedding some time? I don't know. Middle Cat says she hopes not - they need to recover from this one. 
When Nephew and Girlfriend departed and the Senior Cat had gone back to his catnap I went to the local library, dropped some books off, delivered a parcel to someone's back door. (They were out. It was just as well. I was too tired to socialise nicely.) And I pedalled home thinking that adrenalin rushes are tiring in the end. Is this why people need those caffeine shots of coffee and those sugar hits in the mornings? 
It's a serious question. I know younger people - much younger - for whom Friday and Saturday nights in particular are the highlights of the week. That's when they get the adrenalin rush of "entertainment" - music, alcohol, drugs and what they believe is friendship. It all happens in a largely artificial and temporary environment. They "recover" on Sundays - or do they? On Mondays they "need" coffee and doughnuts...and it goes on until Friday and Saturday...
I am trying to work out what my generation did instead. We must have done something. We weren't perfect by any means. I know I would have been working because I was supporting myself through teacher training but what did my friends do? They went to "the pictures" occasionally but what else did they do?
We must have done something!