What happens to capillaries when the body is at rest?
Capillaries supply blood to your tissues. When the body is at
rest, less energy is being used so the capillaries are not as
engorged in comparison to exercise.
When one rests on harder surfaces, more pressure points occur
that can close off capillaries and decrease blood flow. This can be
amended with cushioning, or balanced by changing body position
intermittently to allow easier circulation to these areas.