Does hot weather affect energy levels?
Rafaela DuBuque
2025-07-20 19:15:11
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Experts confirm that the body's heightened effort to regulate its internal temperature in the face of rising heat is a significant contributor to this widespread sluggishness. The physiological demands of coping with warmer conditions can leave individuals feeling profoundly drained, impacting concentration and overall energy levels throughout the day. The body is working harder to function in high temperatures, contributing to why you feel more tired. When it’s hot, the body must work harder to maintain homeostasis, which is defined as the process by which the body maintains a stable internal environment. In order to do this, the heart has to exert more effort to circulate blood flow towards the skin so that heat can radiate away, contributing to an increased workload and therefore feelings of fatigue. The brain perceives the heat as a physiological stressor, leading to a dip in energy, motivation, and mental stamina – so your body is working harder. High temperatures negatively impact brain function and alertness by causing thermal stress that disrupts neurological functions. This effect is intensified by dehydration, which reduces blood flow and oxygen delivery to the brain, impairing attention, memory and mental clarity.
Amya Walter
2025-07-20 17:28:56
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: 6
A heatwave can affect anyone, but the most vulnerable people are: older people – especially those over 75 and female, those who live on their own or in a care home, people who have a serious or long-term illness including heart or lung conditions, diabetes, kidney disease, Parkinson's disease or some mental health conditions. People who are on multiple medicines that may make them more likely to be badly affected by hot weather are also at risk. Those who may find it hard to keep cool – babies and the very young, the bed bound, those with drug or alcohol addictions or with Alzheimer's disease, are also vulnerable. People who spend a lot of time outside or in hot places – those who live in a top-floor flat, the homeless or those whose jobs are outside, are at risk as well. If you or someone else feels unwell with a high temperature during hot weather, it may be heat exhaustion or heatstroke. Overheating, which can make symptoms worse for people who already have problems with their heart or breathing, is a risk posed by a heatwave.
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