Its too cold for me already

Thicker socks, more layers, bung a hat on, my snood comes out when it gets chilly.
Hot water bottle and a blanket over your legs if cold.
A lot of people say they're cold but do naff all about it, just sat on the sofa shivering, get up move your body, get one of them mini bike exercise machines to get your blood pumping a bit, snuggle up to your significant other, or cat/dog.
Be thankful being a bit chilly is the only pressing issue right now, some folks out in the world are going through it.

Wearing layers makes a big difference.

Suspect people are moaning because of the sudden shift. Should have been colder earlier than now but the heat dragged on a bit countering the earlier nights. Also everyone is different - my significant other's hands and feet get ice cold (to the touch) when she's sat right next to me in the same room. People are allowed to moan. If someone in an African tribe mentions its got chilly on an evening do people tell them they're not allowed to complain because of what Eskimos deal with!

Get some thermal underwear. Our house got down to 12c last winter but still didn't feel cold. Doubt the heating will go on until at least mid November. We use gas for heating, hot water and cooking



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Movement is key, if your sat on sofa you'll get cold. Hoover the stairs you'll warm up

Put a coat on