1.   As the stress level goes up or as anxiety increases, one is more prone to sleeplessness.

2.   The level of productivity went up slowly, but employment prospects did not.

3.   Blood-sugar levels go up as you digest food.

4.   At the same time, contribution levels have gone up to one-third -- meaning everyone pays more.

5.   And the next level was going to be a big step up.

6.   Actually, the dioxin levels went up, he admitted.

7.   After the abnormal tissue in a molar pregnancy is removed, the level of hCG goes down.

8.   But since then, high cash levels have gradually gone out of fashion.

9.   Choose to concentrate on sports one week, for instance, and your athletic rating goes up but your knowledge level goes down.

10.   Flier reasoned that if he was correct, leptin levels should go down if animals or people were starved.