When you sit on a chair and work continuously time seems to pass fast, because your focus on time is lost, due to the fact you are paying more attention to your work. But when you move to seat by seat to look at someone else’s work or talk to someone time will seem to be passing slow because now you are more concerned about time because you have to finish your own work too, So now you have added movement of your body in space and a secondary attention in mind to finish your work before office hours is making you feel of the time. So you experience the passing of time each and every tick.
My understanding of time:
Since the passing of time is affected by various forces acting on an object/ living being, like one such force is gravity , it tends to slow down time with the rate of increase in the force of gravity. So time travel is observed as by the laws of physics , from an example travelling to an object that has immense gravitational force such as blackhole will make the time passed by us at an extremely slow rate, i.e. we are now relative to the time of blackhole, but our body will only grow old at the rate at which is going through by the brain temporally coordinating among different senses, but also among different sensory modalities. For example, for vision, this would include a coordination between an objects' edges, motion, angles, color, etc. (stated by David Eagleman) however the time on planet earth is bind to its own gravity and the people on earth will continue to grow old at its rate which is faster in comparison to the time around the blackhole. So those on a spaceship near a blackhole will not grow old and when they reach back earth a lot of time might have been passed and the people of same age would have grown old and you are still young.
However the question now comes to my mind is why the people/scientist call it travelled in time, when its rather only that we have lived more in time.
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