[vilen]

As an athlete, I'm not surprised by these results. Most people are sedentary and step counting only goes so far to improve their health. Even in Italy, as shown in the article's graph, the decline has been 25%. If the recommended goal 10,000 steps per day then 7,500 is still a good number to hit during a pandemic.

[dimtion]

I would be very surprised that the average number of steps across their userbase has uniformly decreased for all users.

For example we could imagine the scenario where some people were able to keep their habit and did not have a great decrease in step numbers, while some other sub-groups have become sedentary because of the confinement. This would show up as an increase in variance in the number of steps.

Stats are hard and it is very easy to draw a wrong conclusion (that sound right) from aggregated data.