Is putting on less heating a way to save money and be healthier?
Thanks for asking. The average British household usually puts on their central heating by October 24th, according to British Gas.
But this year, thanks to soaring energy costs and a mild winter, it may well be later.
Turning down your heating can have real savings.
The Energy Savings Trust calculates that turning your thermostat down from 20 degrees to 19 degrees should cut your energy bill by around 10%.
But as well as saving money, there are possible health benefits as well.
What are the health benefits?
According to a study carried out by the Garvin Institute of Medical Research in Australia, spending time in an environment at 19 degrees increases your brown fat.
This is unlike normal fat because it is packed with mycochondria, which act like mini power stations, turning food into energy.
Boosting your brown fat levels means you burn more calories, and it should also improve your insulin sensitivity.
Reducing the amount of insulin your body has to produce after a meal to bring your blood sugar levels back to normal.
That should mean less hunger and a lower risk of obesity and type 2 diabetes.
Should we go lower than 19 degrees?
In another study, research at Maastricht University Medical Centre in the Netherlands showed that volunteers were able to adapt to even colder temperatures.
They spent 6 hours a day living at 15 degrees.
After 10 days, not only did their brown fat levels rise, but they said they felt comfortable and didn't shiver as much.
However, there is a concern about damp.
In winter, rooms were at risk of becoming stuffy and humid because we closed doors and windows to save heat, trapping moisture inside.
Ideally, the relative humidity, in other words how much water vapour is in the air, in a room should be between 40 to 60%.
If it goes much higher, your clothes start to become clammy and less effective at retaining your body heat.
One solution is to buy a dehumidifier.
Should anyone not turn down the temperature?
Women can be more sensitive to cold, as they tend to have much less muscle to generate heat and because estrogen dilates the blood vessels at the surface of the skin, which means more body heat escapes.
Young children have more skin surface compared with their body weight than adults, so they also lose body heat faster.
Finally, people aged 70 and over are more prone to losing body heat faster, because they can be unaware of how cold they actually are and this can result in hypothermia.
The charity, Age UK, says that older people's main living areas should ideally be kept at 21 degrees or above, while bedrooms should not drop below 18.
There you have it. Now you know if putting on less heating is a way to save money and be healthier.
In under three minutes, we answer your questions and help you understand the true meaning behind the trends, concepts and acronyms that are making headlines.
Listen along and you really will know for sure.