We have all seen movies where right before the hero starts fighting, he cracks his knuckles and makes it look like the coolest thing in the world! But then our parents told us that you should not crack your knuckles because that weakens your grip and hand strength. But is that true? While many people do say that they experience a small loss in strength immediately after they crack their knuckles, but are their long-term effects to it? And what is the sound actually coming from?

The reason why people crack their fingers is because the evident and sharp crack noise causes a sense of relief. Many people also do it when they have done an activity that required them to work with their hands a lot like typing or sewing, giving themselves a sense of satisfaction, similar to stretching after doing hard work. That "crack" sound can make some people cringe, while others find it strangely satisfying. Cracking your knuckles is a pretty common habit, but there are a lot of misunderstandings about it. Some people do it without even thinking, others can't stand the noise, and some can't crack their knuckles at all. You might have been told as a kid that it causes arthritis or makes your fingers swell up. But those are just old wives' tales. There's a real science behind this habit, and it's more interesting than you may think.

Why Do Knuckles Make That Popping Sound?

The "crack" isn't actually bones breaking or anything bad happening to your joints. It's a normal thing called "crepitus." This just means harmless popping, snapping, or grinding sounds that come from your joints. The main reason you hear this sound is because of gas bubbles in the fluid that cushions your joints. This fluid is called synovial fluid. When you move or stretch, these tiny bubbles form and then pop, making the sound. It's totally normal and doesn't hurt you. Sometimes, especially in bigger joints like your knees, shoulders, or ankles, the sound can also happen when the stretchy tissues that connect your bones (ligaments and tendons) move slightly and then snap back into place.

After you crack your knuckles, you can't usually do it again right away. You have to wait a bit. That's because the gas bubbles in your joint fluid have already popped, and it takes a little while for them to build up again. While cracking your knuckles doesn't give you arthritis, doing it too much might cause some problems. Doctors say that cracking them too often could make your joints a little wobbly and might even make your grip weaker. Also, if the stretchy tissues in your joints keep snapping over your bones, they can get irritated and sore.

When Joint Popping Might Mean Something More

Sometimes, a pop in your joint is just like cracking your knuckles, nothing to worry about. But other times, it can be a sign of something else. As we get older, the cushiony stuff in our joints, called cartilage, can start to wear down. This cartilage helps your bones move smoothly. When it gets thin or uneven, the bones can rub together, and that can make a grinding or popping sound. This is different from the pop you get from gas bubbles. If this grinding sound happens along with pain, it could be a sign of osteoarthritis. This is a type of joint problem that's more common in older people, but younger people can get it too, especially after a joint injury. If your joints hurt, especially in the morning or after you've been sitting still for a while, feel wobbly, or are hard to move, it's a good idea to see a doctor.

Heart clips—also referred to as heart valve clips—are part of a minimally invasive medical procedure known as Transcatheter Edge-to-Edge Repair (TEER). Designed to repair leaking heart valves without open-heart surgery, this advanced treatment restores proper blood flow, relieves debilitating symptoms, and helps patients return to their daily lives.

Understanding Valve Leakage and Symptoms

The heart's valves rely on thin flaps of tissue called leaflets to regulate blood flow.

• The mitral valve (located on the left side of the heart) typically has two leaflets.

• The tricuspid valve (located on the right side of the heart) usually consists of three leaflets.

When a valve is leaking, the leaflets fail to close completely, leaving a gap. Blood leaks backward through this opening toward the lungs, increasing lung pressure and directly causing chronic breathlessness and fatigue.

Also read: 100% Blockage At 18, 25% Patients Under 40: On World Heart Day, Cardiologists Reveal An Alarming Heart Attack Pattern

How the Clip Repair Procedure Works

During a Transcatheter Edge-to-Edge Repair, cardiologists repair the valve using a tiny clip delivered through the vascular system:

1. Catheter Access: Guided by continuous echo imaging, doctors insert a catheter into a blood vessel in the groin and navigate it directly to the heart.
2. Targeting the Valve: The catheter goes to the left side of the heart for a mitral valve repair or to the right side for a tricuspid valve repair.
3. Identifying the Leak: Imaging pinpoints the exact spot where the leaflets fail to seal.
4. Deploying the Clip: The doctor positions and deploys the clip across the leaking gap, grasping the two opposing leaflets and pulling them closer together.
5. Evaluating the Seal: Before releasing the clip completely, doctors perform an echocardiogram to confirm that the clip is strongly anchored, that the backward leak is fixed, and that the risk of clip detachment (embolization) is negligible.

Immediate Relief and Long-Term Healing

Once the clip brings the leaflets together, backward leakage stops immediately, allowing the entire volume of blood to pump forward as intended.

• 24-Hour Recovery: Pressure inside the lungs drops rapidly once the leak is sealed. Many patients notice a dramatic improvement in their breathing within 24 hours of the procedure.

• 3 to 6 Month Integration: Over a period of three to six months, surrounding heart tissue naturally grows over the clip (endothelialization), permanently integrating it into the heart structure.

Smooth Hospital Stay and Recovery

Because the procedure is catheter-based rather than open-chest, patient recovery is remarkably swift:

• In-Room Extubation: Patients are taken off the ventilator right on the procedure table.

• Minimal Closure Site: The groin entry point is closed cleanly using specialized sutures (such as ProGlide or a figure-of-eight suture).

• Quick Discharge: Patients typically spend just one day in the Intensive Care Unit (ICU) before moving to a standard room, after which they can return home and resume normal daily activities.

Frequent cannabis use may worsen epilepsy-related symptoms, new research. It discovered that raised that people with drug-resistant epilepsy who used cannabis often had more frequent convulsive seizures and sought advanced epilepsy care much sooner than non-users.

Published in Epilepsia, the study analysed health records of 64 adults with drug-resistant epilepsy. It found that frequent cannabis users reached an intensive epilepsy monitoring stage an average of five years after their first seizure, compared to 18 years reported among non-users.

The difference of 13 years is attention-worthy but it must be noted that the study shows an association, not proof that cannabis worsens epilepsy.

Seizures Doubled In Cannabis Users With Epilepsy

Researchers compared 22 people who used cannabis at least 20 days a month to 42 people who did not.

The frequent users reported to have a heavier burden of seizure, one of the symptoms of epilepsy. They had more than twice as many convulsive seizures per year than non-users.

About 91% of frequent cannabis users experienced convulsive seizures, compared to roughly half of the non-users.

Seizures involve stiffening and jerking of the body and loss of consciousness. They constitute medical emergency as they are associated with sudden death in epilepsy.

Also read: Does Cannabis Really Help You Sleep? Experts Say It Is Complicated

What Does Drug-Resistant Epilepsy Mean?

Epilepsy is considered drug-resistant when seizures continue despite appropriate treatment with two antiseizure medications.

People with drug-resistant epilepsy may need to visit specialised epilepsy centres, where doctors can monitor them and recommend changes in medication, surgery, or other treatment options. In this study, frequent cannabis users reached this stage much earlier.

They were also discharged from hospital after taking an average of 3.05 antiseizure medications, compared with 2.21 among non-users.

Also read: Why Can’t Millennials Sleep? The Crisis Keeping An Entire Generation Up At Night

Cannabis & Epilepsy

This was a retrospective study based on health records of a small sample size. There may be other differences between people who used cannabis often and those who did not that could affect the severity of the seizures.

However, researchers were able to establish the timing of cannabis use for 15 of the 22 users. All 15 had started using cannabis before their first seizure, making it less likely that they had simply begun using cannabis to cope with an already existing seizure disorder.

The researchers say larger studies can determine whether cannabis contributes to worsening seizures.

The association between cannabis and seizures is complicated as CBD (cannabidiol) is reported to have beneficial effect on severe epilepsy.

To understand the seeming contradiction, we must understand the distinction between cannabis and purified cannabidiol (CBD).

A purified form of CBD is an approved treatment for certain severe forms of epilepsy. CBD is different from THC, the psychoactive element responsible for the “high” associated with cannabis. Recreational cannabis products may contain high concentrations of THC.

According to the researchers, animal studies suggest CBD can suppress seizures, while THC may have the opposite effect.

Hence, evidence that a specific CBD-based medicine can help certain epilepsy syndromes cannot be used to conclude that recreational cannabis is an epilepsy treatment.

Researchers suggest that THC acts on receptors concentrated in brain regions involved in seizures, raising the possibility that cannabis could influence how brain circuits fire. But this is a hypothesis that needs further investigation.

A stroke changes the life of a person in an instant, making everyday activities like walking, talking, or even holding a cup difficult. But strokes do not always mean these challenges are permanent. Many people recover lost abilities and enhance their lives with timely treatment, proper rehabilitation and continued support.

A stroke occurs when blood stops flowing to the brain or a blood vessel in the brain bursts, cutting off oxygen to brain cells. It can cause weakness or paralysis, speech problems, poor balance, or memory issues, or trouble swallowing, depending on the part of the brain that is affected.

Tips to Support Recovery from Stroke

• Begin rehabilitation immediately after a stroke
• Attend Physiotherapy and speech Therapy sessions regularly
• Take prescribed medications as directed.
• Keep blood pressure, diabetes and cholesterol under control.
• Have a healthy and nutritious diet to restore energy.
• Stay physically active
• Seeking emotional and psychological support

Also read: 100% Blockage At 18, 25% Patients Under 40: On World Heart Day, Cardiologists Reveal An Alarming Heart Attack Pattern

The Treatment Journey:

Timely Medical Care Makes a Big Difference

Patients who reach the hospital within a certain time may be eligible for clot-busting medications or clot removal procedures. These procedures restore blood flow, reduce brain damage and increase the likelihood of faster recovery.

Rehabilitation starts immediately after stroke

Stroke care extends beyond emergency treatment. Rehabilitation begins within 24 hours after a stroke when the patient is medically stable. A team of specialists, including neurologists, physiotherapists, and speech therapists, works together to help the patient regain function, rebuild confidence and return to everyday activities as soon as possible.

Physical Therapy to Rebuild Body Movement and Independence

When a stroke happens, muscles on one side of the body may become weak or paralysed, affecting the patient's strength, balance, coordination, posture, and walking.

Physiotherapy consists of a series of exercises, muscle training and mobility techniques that enhance mobility of the body and improve functional independence. Many patients can perform activities with greater ease with regular rehabilitation.

Also read: Weekend Workouts: Why Sudden Intense Exercise May Put Stress on Your Heart

Enhancing communication and cognitive skills

After a stroke, some patients have problems talking, speaking, swallowing, remembering or concentrating. Speech and language therapy are used to help with communication and safe swallowing, and cognitive rehabilitation is used to support memory, attention, reasoning and problem solving. These therapies assist patients in re-entering the workforce, social circles and independent living more smoothly.

Modern Rehabilitation Methods for Better Recovery

Advances in rehabilitation have expanded the range of therapies available to support stroke recovery.

Techniques like robot-assisted rehabilitation, functional electrical stimulation (FES), virtual reality-based therapy, constraint-induced movement therapy, balance training systems and computer-assisted gait training complement conventional rehabilitation very well. These methods provide repetitive, targeted exercises that promote functional improvement in the brain and body.

Managing Ongoing Challenges

After a stroke, some patients have muscle stiffness (spasticity), chronic pain or trouble walking or moving their hands. They are treated with medications, injections and continued rehabilitation therapy.

Recovery from a stroke is much better with proper rehabilitation. While some regain most of their abilities, others continue to need support, making patience and consistency just as important as medical help. The right care at the right time makes a big difference in rebuilding your life.

By Dr. (Lt Gen) CS Narayanan, VSM, Chairman - Manipal Institute of Neuro Sciences, Manipal Hospital, Dwarka, New Delhi