It never hurts to exercise your plumbing. Especially since traps tend to dry out. If this is for an empty/seldom used home/fixture I would cycle them once a month or so.
I mean water pipes in bathroom.. shower pipes to be exact. I go to a gym everyday and take shower there, so no need to waste hot water at home. but I wonder whether would it affect those pipes or not if not using them for a long period?