Sleepy times

Lately, I can't seem to stay awake long after I sit down on friends's couches.I start my evenings with every intent of socializing and having a good time. But just thinking about an old soggy couch with ripped cushions makes my eyes go heavy. The last few nights I have woken up in darkness with no sign of friends.....I am always alone. I wish my friends would wake me up instead of my dry contact-laden eyes refocusing, finding the time to be 3 even 7 in the morning, and then making the cold drive home in my frosty car. I am just getting to that age.