According to Einstien’s theory of General Relativity gravity slows down time. That is, clocks tick faster on GPS satelites than they do on the Earth. Clocks on the surface of the Earth would tick faster than clocks on the Sun because the Sun has more gravity. The greater the gravity the slower the clock ticks
Based on my experience, a data point of one, age makes clocks tick faster. Clocks tick much faster now that I’m 70 than when I was 16.
Why didn’t Einstein include age in the theory of General Relativity?