Exerciser is a set of drush commands used to flush out error and warning messages that get created when pages are rendered for viewing.

Exerciser Exercises (renders) every page of a content type.
If no content type argument is supplied a list of all content types
will be displayed for your choice.

Exerciser can load pages on the same server its loaded on or another server for the same site.

Source: https://drupal.org/project/project_module/feed/all