Si estás viendo este vídeo a las 3am, avisa. En unas semanas les hago uno con más hacks para el insomnio. Nota: La metáfora del vaso es pedagógica, no una representación cuantitativamente exacta. Lo que la literatura sostiene es el mecanismo cualitativo (cortisol basal alto+subida nocturna gradual=cruce prematuro del umbral de despertar). Alharbi, A. G., & Alrehaili, B. D. (2025). Cortisol: Metabolism. IntechOpen. intechopen.com/online-first/1226970 Kaur, J., Gandhi, J., & Sharma, S. (2025). Physiology, cortisol. In StatPearls. StatPearls Publishing. ncbi.nlm.nih.gov/books/NBK538239/ Zhu, L.-J., Liu, M.-Y., Li, H., Liu, X., Chen, C., Han, Z., Wu, H.-Y., Jing, X., Zhou, H.-H., Suh, H., Zhu, D.-Y., & Zhou, Q.-G. (2014). The different roles of glucocorticoids in the hippocampus and hypothalamus in chronic stress-induced HPA axis hyperactivity. PLOS ONE, 9(5), e97689. ncbi.nlm.nih.gov/pmc/articles/PMC4022669/ Debono, M., Ghobadi, C., Rostami-Hodjegan, A., Huatan, H., Campbell, M. J., Newell-Price, J., Darzy, K., Merke, D. P., Arlt, W., & Ross, R. J. (2009). Modified-release hydrocortisone to provide circadian cortisol profiles. The Journal of Clinical Endocrinology & Metabolism, 94(5), 1548–1554. pmc.ncbi.nlm.nih.gov/articles/PMC3475279/ Vgontzas, A. N., Bixler, E. O., Lin, H.-M., Prolo, P., Mastorakos, G., Vela-Bueno, A., Kales, A., & Chrousos, G. P. (2001). Chronic insomnia is associated with nyctohemeral activation of the hypothalamic-pituitary-adrenal axis: Clinical implications. The Journal of Clinical Endocrinology & Metabolism, 86(8), 3787–3794. pubmed.ncbi.nlm.nih.gov/11502812/ de Menezes-Júnior, L. A. A., Sabião, T. d. S., Carraro, J. C. C., et al. (2025). The role of sunlight in sleep regulation: Analysis of morning, evening and late exposure. BMC Public Health, 25, 3362. link.springer.com/article/10.1186/s12889-025-24618-8 Windred, D. P., Burns, A. C., Lane, J. M., Saxena, R., Rutter, M. K., Cain, S. W., & Phillips, A. J. K. (2024). Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study. Sleep, 47(1), zsad253. ncbi.nlm.nih.gov/pmc/articles/PMC10782501/ Vierra, J., Boonla, O., & Prasertsri, P. (2022). Effects of sleep deprivation and 4-7-8 breathing control on heart rate variability, blood pressure, blood glucose, and endothelial function in healthy young adults. Physiological Reports, 10(13), e15389. pmc.ncbi.nlm.nih.gov/articles/PMC9277512/ Li, X., Huang, J., & Zhu, F. (2025). The optimal exercise modality and dose for cortisol reduction in psychological distress: A systematic review and network meta-analysis. Sports, 13(12), 415. pmc.ncbi.nlm.nih.gov/articles/PMC12736704/ Gardiner, C. L., Weakley, J., Burke, L. M., Fernandez, F., Johnston, R. D., Leota, J., Russell, S., Munteanu, G., Townshend, A., & Halson, S. L. (2024). Dose and timing effects of caffeine on subsequent sleep: A randomized clinical crossover trial. Sleep, 48(4), zsae230. pmc.ncbi.nlm.nih.gov/articles/PMC11985402/ #insomnio #cortisolalto #burnout #estress #3am - @its.ursula.say.it