Check out his tweets below

In a statement to The Verge, Strave said “the map is an aggregated and anonymised view of over a billion activities uploaded to our platform.” The company says activities which are marked as private are not part of the global heat map. Despite the heatmap being released more than two months ago, the ability to see activity in potentially sensitive locations was only spotted in recent days when Nathan Ruser, an international security student at the Australian National University, noticed data was being displayed around military bases.
Researchers note that in November 2017, Strava, which processes data from apps and Internet of Things devices such as Fitbit, accidentally revealed the locations of alleged United States military bases overseas, including in Afghanistan, Djibouti and Syria.