For instance, the motion of a spacecraft, regarding its orbit and attitude , is described by the relativistic theory of classical mechanics, while the analogous movements of an atomic nucleus are described by quantum mechanics.
According to the NHS, the average Briton walks between 3,000 and 4,000 steps a day - significantly less than the Fitbit target. Yet many people do significantly more, and for them 10,000 steps might not be much of a target.
Men: 7192 steps per day. Women: 5210 steps per day. Study participants with larger body mass indexes (a measure of overweight and obesity) took fewer steps per day on average. People walked more on workdays, weekdays, and days they participated in sports or exercise.