I've been keeping my house at 55F/13C this winter, not for money reasons, but because of climate change. Last winter I got used to 60F/15.5C, which now feels super warm and unnecessary.<p>So here's my advice for people:<p>1. Start today! Don't wait to see what happens in Ukraine. Lower your temperature by 1 degree right now. Just do it. 1 little degree isn't a big deal. Let your body acclimate to that. It'll happen on its own - our bodies constantly adjust to different temperatures throughout the year. Know that a temperature barely lower than you're used to won't give you hypothermia. It's not a threat to you. It's just a slightly different temperature so embrace it. Welcome the change, mentally choosing it. Once you're comfortable, lower the temperature again. Rinse and repeat. If you do this, you'll look back and be shocked at how you once thought a homeostasis temperature was necessary (or even desirable).<p>2. Eventually you'll feel the need for extra heating. The most efficient ways are directly heating the body through appropriate clothing and direct heat sources. For clothing, if you're cold, just add more. For direct heat, use a hot water bottle. You can also get an electric bed mattress pad. A heated mattress pad is <i>amazing</i>.<p>3. Warm food and drink: in summer, drink cold things. In winter, drink warm things. Eat warm foods like porridge (oatmeal/grits/cream of wheat/etc.), soup/stew, etc. When drinking, hold the hot mug in your hand. When eating, hold the hot bowl in your hand.<p>3. Water conservation - a lot of the water we use has been heated, for showers, washing hands, etc. Efficient showerheads and faucet aerators are CHEAP! Some of them have their usage etched into the side, if not, you can measure its flow rate with a measuring cup and a stopwatch. Once you know how much it uses, look into upgrades. When showering, turn the water on, get wet. Turn off the water. Soap your whole body, then wash the soap off. Now you're almost done with ~45 seconds of water use. It's easier in summer, but I'm now doing this in winter also.<p>Those are the basics and you'll get better with time. Eventually you'll be able to see heat like Dr. Manhattan sees atoms. You'll just see it everywhere, how it moves in and out of the system, and how you can harness and hold on to it, using it multiple times before it's gone.