Lisa Vanderpump \'in shock\' after fainting

\"The Real Housewives of Beverly Hills\" star Lisa Vanderpump says she was \"in shock\" after fainting during practice for \"Dancing with the Stars.\" \"I was exhausted and everything felt off. [My professional dance partner] Gleb [Savchenko] and I were rehearsing our cha cha and suddenly I just blacked out,\" Vanderpump, 52, blogged on People.com about falling ill late last week. \"I was in shock when I woke up. I fainted only once before in my life. The doctor found that I had a viral infection with fever and swollen glands. And between trying to fight that and all of the stress on my body from running around, I ended up with low blood pressure and a rapid heart rate, which is why I fainted,\" she wrote. \"I am still fighting the bug and feeling under the weather but I am staying in the game as long as they say I can. And I will give it my best.\"