Today is not a good day for idols... Not only did B.A.P's Himchan injure his arm during the concert in Australia but also Red Velvet's Joy collapsed from shock during a performance at a university on May 26.

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As you can see in the video above, the girls are performing "Happiness" when the stage effects, like the smoke, kicks in, alarming Joy, who covers her ears.  She tries to continue dancing, but shortly thereafter, she is unable to go on and she collapses, alarming all of her members.  She shakily stands up but is clearly wobbly from the shock. Fans have noted her facial expression was not good afterwards, although she had seemed fine and happy before the event, even posting cute selcas onto her Instagram.

Watch the performance above.  Hopefully she's all right now!