(Cover) - EN Showbiz - Angelina Jolie says she and Brad Pitt dont need to go to the gym as looking after their children keeps them in shape.

The stunning actress and her movie star partner are kept busy raising their six children together; Maddox, nine, Pax, six, Zahara, five, four-year-old Shiloh and two-year-old twins Knox and Vivienne.

The already slender star thinks chasing around after the kids helps keep her and hunky Brad fit, as the little ones often run wild through the family home.

We have gates all over the place inside the house. Even with the gates, Brad and I will collapse at the end of the day knowing that we got our running in for the day. We dont need to go to the gym, she laughed in an interview with the British edition of OK! magazine.

Angelina says toddlers Knox and Vivienne are surprisingly speedy, and six-year-old Zahara can run astoundingly quickly. Angelina admits it is hard work looking after all her family, although she wouldnt change it for the world.

Let me tell you, toddlers can run really fast! I mean, Zahara can easily out-run me. But the twins have this deal where they run off in different directions at the same time. Thats a real challenge, added the beauty. (C) Cover Media