Labor Day actress Kate Winslet often vomits before she shoots tough scenes because her nerves take over.

The 38-year-old Oscar-winning star explained that she gets struck down by nerves that leave her feeling nauseous before hard parts in front of the cameras.

The Metro quote Winslet, as saying: ''I think you get really good at mind-f***ing yourself, to be honest. Acting is bloody scary. I still have moments when I think, 'I can't do this - everybody thinks I'm absolutely sh*t.' There are scenes I absolutely dread - there was a scene in Labor Day; the whole courtroom sequence in The Reader. I often throw up, which I'm a bit embarrassed about. It's the adrenaline.''

Winslet has daughter Mia, 13, with ex-husband Jim Threapleton, son Joe, 10, with ex-husband Sam Mendes, and four-week-old son Bear with husband Ned Rocknroll.