ACROSS
3. in a confused or sleepy state
5. to delay or obstruct progress
8. full of energy and excitement
9. walking unsteadily, often due to tiredness
DOWN
1. the 24-hour biological cycle regulating various body functions
2. to become subject to something, usually negative
4. the starting point for measurements or comparisons
5. to begin performing at full capacity or efficiency
6. to stabilize or hold in place
7. an unusual habit or part of someone's personality
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