1. For best results, keep upright posture so that your body and mind are well balanced.

2. If you would kindly please to let me keep upright , sir, perhaps I shouldn't be sick.

3. A park spokesman said that al its 19 dolphins have been on a low fat diet since late August, when they started failing to hit jumping targets and keep upright while treading water.

4. 'When I first got on it I thought it would never work and at a slow speed it's almost impossible to keep upright.

5. If you stand on one leg and observe for a time what you do to keep upright, you may notice that the adjustment to your posture can happen anywhere from your ankles all the way to your head.