Imac streaming to hdtv.  Do I leave the cable plugged in?

I'm not sure if I'm asking this quesiton in the right place, but any help would be appreciated.
I have connected my Imac to my hdtv using an hdmi cable through a thunderbolt port.  It works great. I only use it occasionally (3-4 times a week) for streaming video from sites like MHZworldview.
My question is- Should I leave the hdmi cable plugged into the computer via the thunderbolt port all the time?  Or should I only have it plugged in when its in use?
The hdmi cable is 100 ft., and has an equalizer that stays lit when connected.
Thanks

Welcome to the Apple Support Communities
You don't have to keep the cable connected when you aren't using your TV as a screen for the iMac, so you can unplug it without any problem, but nothing should happen if you leave it plugged to your TV

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