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Resilient body, hesitant brain: the subtle cost of neglecting hydration
17 juillet 2025
By Lila Rouland | Published on July 17, 2025 | 3 min read
#Dehydration #Exercise #Cognition #Thermoregulation #Heat
Sustained mild dehydration (SMD)—often overlooked—may subtly but significantly influence our perception of effort, thermal comfort, and mental clarity. A Japanese study sheds light on the invisible consequences of SMD during moderate exercise in hot environments. While physiological functions appear unaffected, perceptual and cognitive impacts are far from negligible.
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Scientific reference
Watanabe H, Kadokura Y, Sugi T, Saito K, Nagashima K. Influence of sustained mild dehydration on thermoregulatory and cognitive functions during prolonged moderate exercise. Eur J Appl Physiol. 2024;124(12):3457–3470.
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