[Physics] Twins Paradox – Does ageing depend on motion

inertial-framesobserversspecial-relativity

I am trying to understand the Twins Paradox (relativity) and its implications.

Can we infer from the Twins Paradox that the ageing process (cell decay or other biological processes) depends on motion? When I move fast, will my rate of ageing slow down?

I know the theory says that its time which slows down but my understanding (it may be wrong) is that time is just a human perception, it isn't a real physical entity. If time isn't real, outside human perception, then it must be the biological process of ageing being impacted by motion, in the Twins Paradox experiment.

Please help me, what am I getting wrong?

Best Answer

Actually when you move close to the speed of light $c$ you don't notice any change in your internal clocks (heart beating, aging, etc). But those observers who see you travel close to $c$ measure that your internal clocks are slow.

Related Question