Sleeping too little can cause job burnout and lower productivity. Get enough sleep to refresh yourself for the next day. But make sure you're getting quality sleep.
睡眠不足会导致工作疲惫，降低工作效率。确保足够的睡眠会带给你全新的一天，但要保证你的睡眠质量。
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Learning burnout reflect the negative learning psychology of contemporary undergraduates. It matters directly to the current undergraduates' learning quality.