SUMMER offers many health benefits - from better mood to more chances to get active and improved sleep.
But some blokes say there’s another perk of warmer weather: the so-called 'summer penis'.
As the heat rises, they believe it has a flattering effect on their length and girth down below.
But is it actually a thing? Dr Chun Tang, GP at private healthcare clinic Pall Mall Medical, weighed in as temperatures across the UK are set to soar to a balmy 31C today.
After weeks of grey weather and showers, Brits will finally be treated to some more summer-y weather, according to the Met Office.
Temperatures are expected to be highest in central and southern England, particularly in London.
Some areas will even experience balmy heats of 31C, before the temperature rockets up to the mid-30s.
Dr Chun said: “So ‘summer penis’ is a term people use to describe when a male's penis seems a bit bigger or fuller during hot weather.
“It’s not an official medical thing, just something people have noticed and talked about.
“The idea is that in warmer months, especially when it’s hot and humid, the heat causes your blood vessels to expand a bit, which can make things down there look a bit different.”
In terms of symptoms, males who experience summer penis may see a bit more size or fullness than normal.
Dr Tang added: “Some men notice that their penis looks a little larger, especially when it’s flaccid.
“Because of the increased blood flow, it might feel a bit softer or more relaxed than usual.”
In a world of ‘showers and growers’, this could be considered a way of bringing about some equality.
But Dr Tang did note that if you’re someone who’s particularly sensitive to temperature changes, you might be more likely to notice the effect.
There’s no exact temperature where 'summer penis' kicks in, according to Dr Tang.
But any situation when it’s quite warm outside - like during a summer heatwave - is most likely.
He said: “When it’s hot, your body naturally tries to cool down by widening the blood vessels, which can make more blood flow to places like your hands, feet, and even your penis.”
So if you want a 'summer penis', it might be an idea to wear loose breathable clothing, like a nice pair of cotton boxers or shorts.
This might make your penis more noticeable because there’s nothing restricting blood flow, experts say.
On the flip side, wearing something tight, like skinny jeans or snug briefs, might prevent the effect because it can limit circulation.
Unfortunately, either way, it's not going to have any impact on your sexual performance.
Dr Sarah Jarvis, GP and clinical director of Patient.info, previously told The Sun: "Technically when you're hot, as well as when you are excited, then your blood vessels may expand.
"When blood vessels on the surface are a bit bigger, then things are going to look a bit bigger.
"But your penis is not growing, it's just your blood vessels growing slightly larger as a way to reduce heat.
"It's not going to make you perform better either - when you are erect your penis is swollen to the max anyway."
Once the weather cools down, you can expect things to go back to normal.
But if 'summer penis' makes you uncomfortable, Dr Tang advises keeping cool.
“Avoid too much heat, wear loose clothes, and stay well-hydrated,” he said.
“This can help minimise the effect.”
Dr Tang added: “On its own, 'summer penis' isn’t a sign of anything serious.
“But, if you notice any sudden or unusual changes in your penis - like significant swelling, pain, or discomfort - then it’s definitely a good idea to get it checked out by a doctor.
“Those could be signs of something that does need attention, like an infection or an injury.”
But it's not just the penis that reacts to hot weather; the rest of the body suffers (or benefits) too.
You might notice your ankles get a little bigger due to fluid retention, or perhaps your thighs start chafing.
People with eczema might find their skin condition worsens when the weather warms up, and asthma sufferers can also find themselves coughing and short of breath.
You may feel happier, more relaxed and sleep better due to increased exposure to sunlight, which can boost the production of melatonin and serotonin, and regulate the body's internal clock, the NHS says.
And of course, there's no escaping the additional sweat.
When the temperatures climb, or you spend a long time in them, you might get heat exhaustion or heatstroke.
Heat exhaustion does not usually need emergency medical help if you can cool down within 30 minutes.
Try things like moving to a cooler area, using a fan, taking off extra layers, drinking cool fluids, and using a cool flannel or sponge.
But heatstroke needs to be treated as soon as possible as it can be fatal, so call 999.
This is because the body’s systems which it uses to try to keep you cool have become overwhelmed and stop working, so your temperature may rise to over 40C and you stop sweating.
