Insomnia

I used to sleep soundly, until recently, that I am experiencing a couple of night of insomnia.

It maybe the caffeine, it maybe the restless mind, it maybe both.

My rapidly pumping heart, my coughing dad, all keeps me awake. The restless results in faster metabolism and it gotta pump faster to compensate the dissipation.

It's a dead loop, until it breakdown, or I could sort out the imbalance.

Would this be another changes which shows up as aging?