Today's Sentence
Video not in English?Seasonal Affective Disorder is caused by the changes in our circadian rhythms, melatonin, and serotonin.
Original Video:6 Signs You Have Seasonal Affective Disorder (SAD)
Key Vocabulary
1. rhythm
rhythm
[ˈrɪð.əm](n.)

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08/03/2025
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LC ST2 years ago
Seasonal Affective Disorder is caused by the changes in our circadian rhythms, melatonin, and serotonin.
Jerry2 years ago