I tick in cycles, yet I’m not a machine. My rhythms govern life; you can hear me but not see. What am I?
Category: Science · Difficulty: hard
Hint: Think about sleep patterns.
Answer
Circadian Cycles
Explanation
Circadian rhythms are physical, mental, and behavioral changes that follow a daily cycle, affecting sleep and other functions.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Circadian Cycles.
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