If you are talking about gymnastics it because Britain just got there first metal ever in gymnastics in a long time.

If you're watching the male gymnastic team finals it's because Great Britain has taken the Silver Medal =D Cheering for the home team.

It was silver for a while, at least...

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No-one's cheering at the Olympics right now because it's 4.55am here in London.

Unless Hope Solo has just produced another crate of condoms, of course...

you must all be on delayed broadcast. Its 5:00 a.m. in London lol