The present subject matter describes a method and a system (200) for providing alerts at a computing device. The method as executed by the system (200) comprises determining usage of the computing device at least through a user-interaction thereon. During said determining, it is ascertained if the user is exhibiting a foot-movement through taking steps. In response to said ascertainment and determination, an overlay of a predetermined-size is displayed for a predetermined amount of time to cause an alert. The size of said displayed overlay is incremented linearly with time, based on persistence of said usage and said exhibition of foot-movement beyond an extended time duration.