If you say this to a doctor then the doctor will think to himself "Every time you do what?" He will begin to imagine frequent scenarios in your life when you might feel tired, for example every time you plough a rice field, or every time you do an IELTS practice test, or every time you lift 200kg above your head.
And so, every time you say every time, you should stop and think: Do you actually mean all the time?!