Gaga struggles with exhaustion
Lady Gaga is constantly struggling to overcome a "fog" of exhaustion which "hovers over" her during her gruelling touring schedule.
The Poker Face hitmaker has been touring non-stop over the last 18 months with her Monster Ball shows and in early 2010, she sparked fears for her health by cancelling a number of concerts due to fatigue.
Gaga admits her constant tiredness is a serious concern, but she is determined to continue her punishing work routine for the sake of her fans.
