The secrets of an airline are always a mystery to the common travellers.
From the life of a pilot to the flight attendants secret codes, it offers amazing stories into the life of those working on planes.
It was recently revealed that even the colour of the interior of a plane is all for a very specific reason.
The reason definitely makes sense for any frequent fliers.
Many flights have blue seats, no matter the airline.
This was recently revealed to be because the colour is associated with being relaxed and peaceful, as well as feeling trustworthy.
With delays and nervous fliers, it can then make them feel safer and calmer.
The colour blue is also used in large companies and hospitals for similar reasons.
Colour website Colour Wheel Pro explains just what the colour blue does to the human body.
It states: “Blue is considered beneficial to the mind and body.
“It slows human metabolism and produces a calming effect.
“Blue is strongly associated with tranquility and in heraldry, blue is used to symbolise piety and sincerity.
“You can use blue to promote products and services related to cleanliness (water purification filters, cleaning liquids, vodka), air and sky (airlines, airports, air conditioners), water and sea (sea voyages, mineral water).”