Body experiences ups and downs throughout the typical day. In fact, biological rhythms, the fluctuations that occur in one’s biological system, dictate numerous factors within one’s body, including hormones, urine output, blood pressure, and our reactions to stimuli.
keep an hourly record of your mental alertness level for a minimum of three days using the following five-point scale:
1–extremely drowsy or mentally lethargic
2–somewhat drowsy or mentally lethargic
4–alert and efficient
5–extremely alert and efficient
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