def enable_service_freshness_checks(self):
        """Enable service freshness checks (globally)
        Format of the line that triggers function call::

        ENABLE_SERVICE_FRESHNESS_CHECKS

        :return: None
        """
        if not self.my_conf.check_service_freshness:
            self.my_conf.modified_attributes |= \
                DICT_MODATTR["MODATTR_FRESHNESS_CHECKS_ENABLED"].value
            self.my_conf.check_service_freshness = True
            self.my_conf.explode_global_conf()
            self.daemon.update_program_status()