Mum's amazing (non) Sleep pattern

[Guest guest]

Hi group:

Arriving back late from a business meeting, I bumped into Mum

going walk-about at about 1:15 am. So of course I had a chat, and

she was really quite alert. From the debris in the kitchen, we

worked out that this was probably the second walk-about of the

night so far. So we made out a sheet of paper, put 1, 2, 3, 4, 5,

down the page, filled in midnight (guess) and 1:15 am for 1 and 2,

and left the others blank to be filled in if she came downstairs again.

So, in the morning, the walk-about timetable said midnight, 1:15

am, 2:25, 3:10, 4:20, 6:00. I took her a cup of tea around 8:30 am.

With that sort of sleep, is it to be expected that she's going to feel

tired and groggy during the day?

That's a serious question. Just how bad would that hit someone, if

it went on night after night?

Colin in England