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. 2021 Jan 6;21(2):346. doi: 10.3390/s21020346

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Typical body temperature trend: (a) circadian rhythm (the blue arrows represent respectively the minimum and the maximum peak during the day); (b) ovulatory cycle and hormonal concentration (the blue arrows represent the minimum and the maximum peak during the month, and the red drops represent the menstruation); (c) march/rest cycle (the metabolism due to muscle activity, in particular the blue arrows represent the march cycle and the remaining one the rest cycle).

Typical body temperature trend: (a) circadian rhythm (the blue arrows represent respectively the minimum and the maximum peak during the day); (b) ovulatory cycle and hormonal concentration (the blue arrows represent the minimum and the maximum peak during the month, and the red drops represent the menstruation); (c) march/rest cycle (the metabolism due to muscle activity, in particular the blue arrows represent the march cycle and the remaining one the rest cycle).