Zoe Saldana drinks vodka to help her cope with sleep training her twins.

The 'Guardians of the Galaxy' star - who has six-month-old Bowie and Cy with her husband Marco Perego - has confessed she often resorts to sipping on the spirit to help her de-stress when she struggles to send the youngsters off into a slumber.

She explained: ''Sleep training twins is no joke because you put one to sleep and you lay him down, and the other one has been asleep, but then that one wakes up and the other one wakes up so then everybody's crying, then my husband and I are crying...You're like, 'Oh, my God!'

''It's overwhelming because there are so many different methods. Just the other day, my sister, who has a 9-month-old, shared with us the method that she did. She brought the piece of paper and grabbed us both with a bottle of vodka. She goes, 'What do you guys have?' That's how her and her husband did it. Because the moment you hear your child cry, it's like it rips the guts out of you. And it's like, we have two. It's crazy.

''My husband doesn't drink and he's like, 'Gimme that bottle!'''

Despite also struggling to change her kids' diapers, the 36-year-old beauty gushed over the twins and described welcoming the tots as a ''blessing''.

She told PEOPLE: ''It's great. It's a blessing. We know because people keep telling us.

''No, we're very, very happy. It's just like whatever you do - if you change a diaper and you put one down, it's like you have to do it all over again. That's when they're in a good mood. But if they're having a tantrum and it's at the same time...''