Viewers reacted with both delight and bafflement as ITV was shut down for an hour, with some joking the blackout was "the best thing" they had ever seen on the channel.
As part of a national sports day event called I Am Team GB, ITV encouraged viewers at home to get off their sofa and do some exercise instead of watching television.
But what do you think? Did the ITV-free hour coax you out to your local leisure centre?
Should all TV channels do this?
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