Penis fractures probably aren't the first thing that springs to your mind when you think about sex.
Instead, your thoughts are more likely to revolve around how to maximise your time spent beneath the sheets.
But a study in 2015 discovered that the risks of breaking the penis during a night of passionate love are real and not to be overlooked, reports the Daily Mail.
Brazilian researchers looked into the three positions the horrific injuries occurred most often in - and their results may surprise you.
• Man breaks penis while having 'passionate' sex
Here, MailOnline reveals the three most dangerous positions based on the research published in the journal Advances in Urology.
Letting your girlfriend control the thrusting by having sex in the cowgirl position is perhaps one to avoid.
Those men seeking a view of their loved one on top of them are most at risk of fracturing their penis, the study showed.
Writing in the journal, the scientists found that this was responsible for around half of all the instances.
But those who prefer the position in reverse shouldn't think they escaped lightly - they're in just as much danger.
The control women have over the speed, power and angle is what makes the position the most harmful.
Coming down too hard on the penis can cause it to bend, and even break, The Sun reports.
Sex and relationship expert Tracey Cox told MailOnline that it doesn't surprise her that this position was on the list.
"If things get lusty and she leans too far forward or too far back and he has a full erection, it can bend the penis into angles that it isn't supposed to go."
Mimicking animals in how they go about their sexual exploits can also have grave consequences, according to the research.
Doggy position was responsible for 28 per cent of the fractures reported, making it the second-most dangerous position.
With only a view of your loved one's back, some raunchy men can get over-excited and become carried away in their actions.
Despite being one of the more popular positions, it can lead to the unsuspecting chap hitting her pelvic bone, causing it to potentially snap.
Ms Cox added: "I'd rate this as the most dangerous of the three - especially if it's done at the end of the bed.
"All it takes if for him to thrust enthusiastically and her to shift position a little and next thing, he's fallen out and about to hit the hard end of the bed with force.
"Stop it happening to you by taking firm hold of her hips to make sure she stays in position.
"You're also safer doing this position on the floor rather than with something hard in front of you."
Even the most boring and unexotic position could leave a man with the most horrific of penile injuries, figures show.
Missionary, adopted by a mixture of both first-timers and passionate lovers, was found to be the third most harmful.
The researchers noted how 21 per cent of penile fractures occurred when the bloke was trying to climax while on top of his loved one.
In complete control of the speed and power of each thrust, this can lead to a man hitting the pelvic bone without intending to.
Ms Cox told MailOnline: "Missionary isn't a position I'd classify as remotely dangerous so am perplexed as to how it made third on the list.
"But if he accidentally pulled out and thrust hard against a hard floor, it could cause a fracture."
How does a penis fracture?
A penile fracture occurs when the appendage is subject to a sharp, blunt force trauma, which can occur during vigorous intercourse or masturbation.
Since 1924, 1,600 cases have been recorded worldwide - roughly 16 instances per year, the Telegraph previously reported.
Researchers noted that in 50 per cent of cases, a gruesome cracking sound can be heard. Four in five male victims lost their erection.
Those who have already been traumatised from breaking their penis are often left with erectile dysfunction problems and a lifetime of painful sex.
Just last week, MailOnline reported on a man from southern China who was left in agony after breaking his penis during sex with his wife.
Doctors found that his penis was at an odd angle and was in a swollen shape that made it look like an eggplant.
He was diagnosed with a penile fracture after tearing a sponge-like erectile tissue called corpora cavernosa.
Blood flows into corpora cavernosa that runs along the penis and making it hard during an erection.
The trick to stopping penile injuries is to thrust quite shallowly, according to Ms Cox.
Holding your partner close to you using a grinding rather than thrusting motion will also reduce the risk, she told MailOnline.