1. Demi Moore is the latest star to feel the strain, as her rep this week said she’s seeking help “to treat her exhaustion and improve her overall health. She looks forward to getting well and is grateful for the support of her family and friends 3. Justin Bieber’s girlfriend Selena Gomez was hospitalized in June 2011 after a taping of The Tonight Show after suffering from severe headache and nausea; Gomez later said she “was just very malnourished, so I was low on iron and exhausted.”