There is nothing quite like that first sip of coffee after you’ve rolled out of bed in the morning and for many of us, that caffeine hit can be vital in getting us through the first few hours of a busy day but scientists say that you should probably wait a little while before gulping down your morning cup of joe. This is because drinking caffeinated beverages like coffee could impact the body’s production of a chemical called cortisol, often referred to as the ‘stress hormone’, which helps to naturally boost alertness at certain times of the day as part of the body’s fight or flight response. …