94-
95:   Among the various biologic rhythm cycles that medical chronobiologists
96-   study, the 24-hour day/night-activity/rest cycle is considered a key
97-   chronobiologic factor in medical [53]diagnosis and treatment. Formally
98:   known as the [54]circadian rhythm, it's also referred to as the "body
99-   clock."
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104-   speeding up and slowing down, intensifying and diminishing, in
105:   alignment with circadian rhythm. Interestingly, so do the symptoms of a
106-   number of [55]chronic disorders: