Our lives are measured in increments.

What event could describe this, what is it, and who is ultimately responsible?

12/25/06:
10:15 am
11:27 am
12:39 pm
01:23 pm
02:22 pm
03:23 pm
03:59 pm
05:25 pm
05:51 pm
06:49 pm
08:04 pm
08:40 pm
10:16 pm

12/26/06:
12:35 am
12:56 am
02:34 am
03:07 am
11:05 am
11:55 am
01:09 pm
02:00 pm
02:40 pm
03:06 pm
03:20 pm
03:45 pm
06:04 pm
07:41 pm
09:01 pm
10:13 pm
11:06 pm
12:51 pm

12/27/06:
03:57 am
04:57 am
06:30 am
07:34 am
09:10 am
11:08 am
12:51 pm
01:57 pm
02:25 pm
04:03 pm
04:39 pm
06:17 pm
07:01 pm
07:26 pm
etc.

12/28/06:
01:30 am
02:09 am
06:21 am
11:08 am
01:03 pm
01:38 pm
01:55 pm
03:25 pm
05:25 pm
06:20 pm
07:36 pm
08:31 pm
09:41 pm
11:42 pm
etc.

And then I ask, is there a rise in cortisol, and or any of these: corticosteroid, epinephrine, adrenaline levels when you scroll fast?