You need to sleep 8 hours at night and o think that's because the brain needs some resetting away from the constant usage we put it through on a daily. So maybe afternoon naps might not count, except maybe you sleep at long stretch in the day time..

Yeah, psychological and physical stress raises the blood pressure. Being heartbroken for a long time makes the body releases stress hormones that can raise the blood pressure.

Well blood sugar levels and blood pressure cuffs can help a lot. One can have diabetes for long without knowing until they develop diabetes nephropathy