I work 12 hours a day and shift changes every 4 weeks, 8 am to 8 pm then 8 pm to 8 am. Lately every time my shift changes my chest feels uncomfortable. As if there's a muscle in my chest and it feels shaky as if when you try to lift an object with your pinky. I know this schedule is a mess but I can't quit my job now so what do you advise to make the monthly schedule transition easier on my body? I sleep when I get sleepy but is it better to set a sleeping and waking schedule prior to the transition? I have 3 to 4 days only before night changes to morning and vice versa. In terms of nutrition how can I get proper nutrition when I frequently lose appetite due to the aggressive body clock change every month?