investigate how noise could cause stress when doing simple cognitive tasks

aircraft noise exposure to residents - causing stress or hypertension

how temperature relates to stress in the environment - driving

rational emotive therapy works when feeling overly stressed about something they are thinking irrationally

rotating shift work to improve sleep by applying circadian principle. phase delay and phase advance to delay or have early sleep

living underground to see if body clock is the same the same time as the people above ground .

people take melatonin pills to induce sleep instead of waiting for the activation in the pineal gland to naturally induce melatonin

hermheiner and petrie (2009) - melatonin effective treatment after 10pm

therapy to prevent the pineal gland from producing melatonin and sleep during night shift to keep awake.