Relative

It's all relative. For example standing still.
Seems like an easy idea. You are standing and
not moving. Or are you?

The Earth you are standing on is rotating at
1,070 miles per hour. (Should you hold on to
something while standing and sprinning?) The Earth
itself is moving in orbit around the sun at 65,000 mph.
Our Solar system is in the Milky Way galaxy which
is moving too, at 600 kms per second. The universe
is expanding which means everything in the universe
is expanding too. So the planet, solar system, galaxy,
universe are moving and taking you, who is just
standing there, along for a tremendous ride.

While you are 'standing still' - and also careening
about the universe - your body is not static. It is
churning away, a machine in action. Heart pumping,
blood flowing, lungs breathing, in fact all organs
systemactically working efficiently while trillions
of cells making up all your body parts are
harmoniously moving about in their little worlds.

Inside each of the trillions of your body's cells are
atoms each with electrons spinning around nucleii.
All that constant motion from infinitesimally small
to universe-sized is happening inside you and outside
of you and you're moving, moving, moving...all while
you were just apparently standing motionless.

So you're standing quite still, staring into space
and not moving which is, of course, impossible.
It's all relative.