I'm doing Uberman, so you need to take that into account when reading
my answers.
I find that my body gets used to having the same schedule every single
day. If I'm very strict about it, I sleep better. Sometimes even
starting a nap 5 minutes late will make it so I don't sleep as well
for that nap. Sometimes for a daytime nap if I start it 5 minutes
late I won't sleep at all. I expect if I moved my naps around a lot
my body would get used to THAT and it would be less of an issue.
Conventional wisdom is that you should try to be strict during
adaptation, and you can be more lax later on.
During Uberman adaptation, unscheduled sleep, even for 2 or 3 minutes,
was not good. It was very hard to avoid at times. I don't think it's
as big a deal for everyman.
Waking up 5 minutes early occasionally hasn't had any noticeable
effect on me at all. As long as I have at least a half a nap, I don't
try to go back to sleep.
I use the placebo sleep tracks for blocking out noise. I can sleep
through an awful lot of noise, but the TV is hard for me to sleep
through. I think it's because my mind follows the story line and it's
too interesting for me to sleep through. I have a nice set of ear-
covering headphones that work well with the white noise to block out
TV noise nicely. I also use the placebo sleep tracks if I want to
sleep in a room where someone else is and I don't want to bother them
with a loud alarm.
I think everyone has times they don't sleep during nap time for some
reason or other. Resting, even if I don't sleep, is better than
ignoring the sleep time. Sometimes when I rested for 10 minutes and
didn't get any sleep, I tried resetting my timer or sleep track and
extending the time. Sometimes that worked and I got very restful
sleep. Other times it didn't and I ended up groggy. It usually had
to do with something I ate. These days I just get up when my alarm
goes off and write it off. I'll drag a little bit until my next nap,
but it's a sure bet I'll sleep well then.