Here's the latest example of Person With A Sensitive Job Leaks Their Location Through The Strava App: someone in the French military giving up the position of their aircraft carrier.

(Source: Le Monde, « StravaLeaks » : le porte-avions « Charles-de-Gaulle » localisé en temps réel par « Le Monde » grâce à l’application de sport)

Might be a good time to review your own apps' settings and disable any unwanted data leakage.