Most people expect to find mould in kitchens and bathrooms, but bedrooms are often affected too. Condensation on windows and walls is a common winter problem, especially in rooms with poor ventilation. Over time, this trapped moisture can lead to mould, which can damage homes and even affect health.

It's not always easy to spot either. Mould often builds up in hidden areas, such as behind beds, wardrobes and other large furniture pushed up against the wall. This kind of damp environment can quickly become a problem. Spores released by mould can trigger allergies, worsen asthma and cause coughing, sneezing, itchy skin and red eyes.

And according to experts, it may even disturb your sleep. The Sleep Foundation says: "In addition to the many health problems mould can cause, research suggests that mould exposure may also compromise sleep.

"In one large study, household moulds were correlated with increased sleep problems like insomnia, snoring, and excessive daytime sleepiness.

"Another study of nearly 5,000 adults found that people who reported mould odors at home also reported higher rates of sleep disturbances."

The charity also explained that if you're sleeping for seven or more hours a night, a mouldy bedroom becomes a significant source of exposure.

But there's one simple trick that can help stop mould from forming in the first place.

Experts say moving furniture away from the wall is an easy and effective way to reduce the risk.

This is especially important for large items like beds and wardrobes, as they can trap warm, damp air against cold walls, creating the perfect conditions for condensation to form.

By leaving a small gap behind your furniture, air can flow freely and stop moisture building up.

The Sleep Foundation said: "Areas of your bedroom with minimal air movement, such as behind furniture and inside closets, may have higher levels of condensation and dampness."

They added that mould often grows before it becomes visible, so it's important to take action even if there are no obvious signs.

Keeping humidity low, opening windows when possible, and drying up spills quickly can all help prevent problems.

If mould does appear, it's best to clean it as soon as possible using appropriate products.

But the easiest step is prevention, and that can start with pulling your furniture a few inches away from the wall.