Most professors do not like teaching classes that meet around 2:30 in the afternoon because they have noticed how easily students fall asleep around then. This is likely due to the 24-hour cycle of the

Circadian rhythm

Explanation:

The circadian rhythm is the period of about 24 hours on which the biological cycle of almost all living beings is based. The circadian rhythm is influenced by light, temperature, movement of the tides, winds, day and night. In this situation, the temperature is the influence to make children fell asleep.

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