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.
Fitbit released data on the average steps per day for each U.S. state, based on over one million users, comparing summer to winter 2012 to 2014. Overall, Fitbit wearers walked 7,000 steps per day in winter and 1,000 more steps per day in summer, around an average of 8,000 steps. How Many Steps per Day Are Enough? The goal of 10,000 steps per day was not originally determined by research.