a decorative texture or appearance of a surface (or the substance that gives it that appearance)

a decorative texture or appearance of a surface (or the substance that gives it that appearance)

a training program in which a person is given information about physiological processes (heart rate or blood pressure) that is not normally available with the goal of gaining conscious control of them

a training program in which a person is given information about physiological processes (heart rate or blood pressure) that is not normally available with the goal of gaining conscious control of them