The Red Devils boss celebrated winning his 13th Premier League title after beating Aston Villa on Monday and despite being 71 shows no signs of slowing up.
Moyes feels his fellow Scot's hunger for trophies has raised the standard in the top flight - and made Everton's job of securing Champions League football even more difficult.
"It is an inspiration he keeps going, he doesn't show any signs of his health causing any problems," said the Everton boss.
"The world we live in now means people are having to work longer so why shouldn't it be football managers as well?
"People in this world are fitter and more healthy and Sir Alex certainly is so we all have to follow his lead and try to keep him up with him.
"Will I be able to? I don't know. Sir Alex might be a one-off.
"He has a battery which goes and goes by the look of it. I am not sure I could go that long."