Dr Nina Rzechorzek, of the University of Cambridge, calls an early morning coffee habit ... He explained: "When it comes to the ideal time to have your first coffee, we might tend to reach ...

However, there is an ideal time ... morning, so around 9:30-11:30 AM. "This is when cortisol levels start to dip. Drinking coffee immediately upon waking may reduce its effectiveness, as cortisol (the ...