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The trust advises draught-proofing your home, including round floorboards, pipework and old extractor fans, and setting the thermostat to the lowest comfortable temperature.

Inflammation is like a thermostat for the immune system and is a normal part of how the body reacts to an infection.

In his first televised fireside chat, he wore a cardigan sweater and encouraged Americans to conserve energy during the winter by keeping their thermostats at 65 degrees in the daytime and 55 degrees at night.

"The data centre industry is also unlocking greater energy savings and efficiencies for homes, businesses, utilities, and other end users – everything from smart thermostats to grid-enhancing technologies require the digital infrastructure provided by data centres."

For decades, environmental advocates have called on people to make sacrifices for the greater good — to bike instead of drive, eat more vegetables instead of meat, and turn down the thermostat in the winter.