/oss/taxonomy/term/3268/all en /oss/article/medical-you-asked/why-do-we-wake-feeling-cold <p>A few different bodily processes in humans follow a stable, roughly 24-hour cycle. For example, the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5568897/">cortisol</a> and <a href="https://journals.sagepub.com/doi/10.1177/0748730404273983">melatonin</a> levels in our blood. Physical parameters like your <a href="https://www.ahajournals.org/doi/10.1161/01.HYP.18.2.199">blood pressure and heart rate</a> too.</p> Fri, 07 Oct 2022 10:00:00 +0000 Ada McVean M.Sc. 9251 at /oss /oss/article/health/clocks-set-rhythm-life <p><span>Most regions on Earth oscillate between a bright daytime and dark nighttime. In anticipation of the varying presence of light, most organism populations have evolved an internal clock that adjusts their behaviours to the time of day (in humans, this clock exists in a part of our brain and certain peripheral organs). Matching the duration of our days, this circadian clock coordinates unconscious behaviours over roughly 24-hour cycles. For instance, during the mornings, humans burn calories faster, sustain higher body temperatures, and have enhanced concentration compared to evenings.</span></p> Tue, 19 Jun 2018 19:41:06 +0000 Lunan Zhao, OSS Contributor 7146 at /oss