Many of us cross our legs when we sit on the floor - but this position isn't completely without risks, especially for people with back trouble, say orthopaedic surgeons.

We all sit cross-legged at some point, whether while eating on the floor, chatting with friends, or simply curling up in a chair. It feels casual and comforting. However, science suggests that this ...

The reason that cross-legged sitting is comfortable is that it allows the trunk to be held in an upright position with relatively little effort. In a standing posture, the pelvis is rotated slightly ...