Have you ever been so tired that the moment you hit the bed, you feel like you are sinking in your mattress? Or did you ever feel your leg twitch in middle of your sleep? Did you feel like you moved your leg to prevent yourself from falling down? If yes, then you are in for a great read!

Why does this happen?

You are not alone, this happens to around 70% of the total population in some way or another. Although these are signs of sleep disorders, it can also happen to people who are otherwise healthy. Sleep disorder specialists believe that there are certain common triggers that leads to such a sensation.

Our brain is exceptional and sometimes when we dream, it makes us believe that we our part of the dream. And if you are falling from somewhere in your dream, chances are, you would feel like you are falling in real life. This experience is known as hypnic jerk, the movement of your muscle that helps you be safe from that fall, or the imaginary one.

What causes it? When we sleep, our bodies become paralyzed, but that does not mean that our muscle control is not totally off. Rather, a slow, dimmer switch. When the dim switch randomly is turned on, we get jerky movements in our sleep.

This involuntary muscle movement is also called myoclonus or hypnic myoclonus, that transitions as you shift from one sleep phase into another.

ALSO SEE: What is sleep paralysis?

What Could Cause It?

There are many theories on what might be causing it. One of them is that when you are at this stage of sleep, you are still not in deep sleep and your brain misinterprets it as wakefulness, however, at the same time your brain does not recognize your muscles to be moving. This is what leads your brain to send a message to your muscles to check-in. It is a way your brain tries to protect you.

Another theory is of course that of stress. When you are stressed, your mind might be racing, while your body is in stationary. This can also affect your sleep cycle and your sleep can be disrupted.

If you are on stimulant drugs or alcohol, it too can prevent you from achieving a good night sleep. If you have consumed too much caffeine then too your muscles can twitch to make you stay awake.

Furthermore, lack of sleep could also be the reason why your mind is used to staying awake even if your body really needs the rest.

Periodic Limb Movement Disorder

While the falling sensation in sleep is quite common, and happens to healthy people, a severe form is the Periodic Limb Movement Disorder (PLMD). PLMD is a repetitive cramping or jerking of legs during sleep. It is a movement disorder that happens only during sleep. It is called "periodic" because the movements are repetitive and rhythmic, which means it occurs in every 20 to 40 seconds. It is also often linked with restless legs syndrome, however, the two are not the same thing.

Restless leg syndrome on the other hand is a condition that involves strange sensations in the legs and arms while awake and an irresistible urge to move the limbs to relive the sensations.

What causes PLMD may be more severe things, including diabetes, iron deficiency, spinal cord tumor, spinal cord injury, sleep apnea, uremia, anemia, narcolepsy, or certain medications.

From physical problems like fatigue and vision problems, people who survive the deadly bacterial meningitis are likely to live with long-term fatigue and vision problems, as well as be at high risk of suicide, according to a new study.

The study comes as the UK is experiencing an outbreak of meningitis in Kent, that began among students who visited Club Chemistry in Canterbury between March 5 and 7.

Although bacterial meningitis is treatable, it requires prompt, often immediate treatment for better recovery. Yet patients are likely to face the risk of fatal or long-term complications -- from physical, psychological, and social impacts, said researchers from the University of Otago, The Conversation reported.

The new findings, based on 16 cases from New Zealand, who reportedly suffered the fatal disease, showed that multiple chronic after-effects is permanent in some, while in others, it dragged on for years. The effects include:

• fatigue,
• difficulties with concentration,
• memory and emotional regulation,
• persistent headaches,
• issues with mobility, vision, and hearing.

• anxiety,
• depression
• suicidality.

"Our findings demonstrate that bacterial meningitis is much more than a life-threatening infection. It is an acute disease with serious, chronic after-effects which are poorly understood and often go unrecognised," the researchers said.

Kent Meningitis Outbreak

The bug that causes the infection has been identified as the known strain of meningitis B, and MenB vaccines will be offered to 5,000 students living in the University of Kent halls of residence in Canterbury.

Meanwhile, the UKHSA chief executive, Susan Hopkins, said the outbreak "looks like a super-spreader" event with "ongoing spread" through universities' halls of residence.

"There will have been some parties, particularly around this, so there will have been lots of social mixing. I can't yet say where the initial infection came from, how it's got into this cohort, and why it's created such an explosive amount of infections," she added.

As per Trish Mannes, UKHSA Regional Deputy Director for the South East, even after two doses, the MenB vaccine “does not protect against all strains of meningococcal disease, nor against all infections that can cause meningitis. It also does not prevent the bacteria from being carried and spread in the community”.

The UKHSA thus warned people to be aware of the signs and symptoms of invasive meningococcal disease, and to seek immediate medical attention if they or anyone they know develops these signs and symptoms.

Common symptoms include:

• rash
• sudden onset of high fever
• severe and worsening headache
• vomiting and diarrhea
• joint and muscle pain
• seizures.

Being tall can have its advantages, but a new genetic study linked height with significant health problems, such as a higher risk of developing heart disease and endometriosis throughout one's lifetime.

While genetics and environmental factors together influence a person’s height, the stature can also prove to be a risk factor for determining the risk of atrial fibrillation, which occurs when the heart quivers rapidly and erratically instead of beating regularly, said the researchers from the China Medical University Hospital in Taiwan.

“By integrating genetic data across multiple East Asian biobanks, we show that the genetics of stature is linked not only to growth-related traits but also to clinically relevant outcomes—most notably atrial fibrillation and endometriosis," said the team in the paper.

"These results suggest that stature-related polygenic scores could help improve early risk stratification in East Asian populations,” they added.

Also read: Woman Left Medically Infertile After Seven Surgeries For Endometriosis That She Did Not Have

Key Findings

The team led by Fuu-Jen Tsai conducted a large-scale genetic analysis on people of East Asian origin. They analyzed 120,000 Han Taiwanese individuals and compared them with 27,966 controls with familial short stature (FSS) -- a harmless condition where people are short due to inherited genetics -- to find genetic factors.

The study also linked a person’s height to overall body size and lung function, as well as cardiovascular traits and reproductive traits, including the age when menstruation starts.

Their findings, published in the journal PLOS Genetics, identified 293 genetic variants linked to height and five linked to familial short stature.

The genetic variants responsible for tall stature increased the risks of both atrial fibrillation and endometriosis. In comparison, the genetic factors for short statures offered a slight protection against endometriosis.

The results proved that taller stature increased the risk of atrial fibrillation independently. But the risk of endometriosis was determined through menarche/weight in taller people.

The Role Of Estrogen

A 2020 study from Denmark shares a possible explanation for the link between height and increased risk of atrial fibrillation: the rising estrogen levels.

Estrogen is a hormone known to promote the growth of the lining of the womb and is also believed to play a role in growth spurts during puberty.

The study, published in the Annals of Human Biology, showed that taller and slim girls in childhood had a high risk of developing endometriosis. The study also marked a lower body mass index as an increased risk of endometriosis.

However, further research is needed to validate these associations and inform clinical applications.

Early monitoring among younger populations has been the primary focus of the recently released American Heart Association (AHA) 2026 cholesterol guidelines.

The deliberate shift is reportedly based on new evidence about how heart disease develops over time.

Speaking exclusively to HealthandMe, Dr. Nils P Johnson, Professor of Cardiology, University of Texas, Houston, US, shared that atherosclerosis, or the buildup of plaque in arteries, doesn’t suddenly appear in middle age; it begins silently in youth.

That is why the AHA guidelines highlighted the importance of early screening.

“Cholesterol risk is really about long-term exposure. Just like years of breathing polluted air can damage your lungs, cholesterol builds up in the body over time. It’s not just about how high your levels are at one moment—it’s about how long you’ve lived with them. For example, one person might have very high cholesterol for 30–40 years, while another has moderately elevated levels for 60 years. Over time, their total exposure can be similar—and so can their risk," Dr. Johnson said.

What this means in practice is that treating cholesterol is about reducing total lifetime exposure.

The cardiologist explained that there are two ways to do that: lower cholesterol levels or start treatment earlier.

"Both approaches achieve the same goal—shrinking the overall ‘cholesterol burden’ by reducing how much cholesterol is in the body and how long a person is exposed to it,” the expert said.

The AHA 2026 Cholesterol Guidelines

As per the Global Burden of Disease Study 2021, the burden of heart failure in adolescents and young adults aged 10–24 years is increasing globally.

The guidelines call for early intervention through early screening and healthy lifestyle changes, starting from childhood.

It recommends:

• Children (9-11 years): Cholesterol screening if never done before.
• Adults (30-79 years): Evaluate 10- and 30-year ASCVD risk to determine the need for early intervention
• Considering lipid-lowering therapy for young adults with -- persistent LDL of at least 160 mg/dL, strong family history of ASCVD, and/or at least 10 percent 30-year risk for ASCVD

"They encourage us to think beyond the usual 5- or 10-year risk window and consider the long-term picture—what might happen 20 or 30 years down the road for someone in their 40s or 50s,” Dr. Johnson told HealthandMe.

Also read: ACC/AHA Cholesterol Guidelines 2026 Explained: Start Screening For Cardiovascular Diseases Early

Heart Disease: A Long-term Treatment

The heart expert also stated that chronic conditions like heart disease require long-term management—sometimes for decades—unlike an infection, where a two-week antibiotic course resolves the problem.

“One of the biggest challenges I see in clinics is that patients often come in after a dramatic event—chest pain, a heart attack, or a procedure. Alongside immediate treatment, I prescribe medications and recommend lifestyle changes. And then patients ask, ‘How long do I have to do this? This reflects a very different mindset”.

Dr. Johnson urged cardiologists and other healthcare workers to help patients understand, accept, and sustain these changes over the long term.

“Adjusting to the reality that life will be different for years or even a lifetime is not easy, but it’s essential,” he said.