When something in the body feels unusual, it’s easy to assume the worst. But the human body often behaves in unexpected ways, and many odd sensations are actually signs of normal, healthy functioning.
General practitioner Dr. Patrick Heath told Newsweek that the body is a “weird and wonderful thing,” adding that “it frequently does things that leave us scratching our heads or feeling anxious.”
He warns that turning to the internet for answers can make things worse, explaining that online searching “often creates far more anxiety than necessary” because “online tools can easily take a single symptom out of context, completely missing the bigger picture of your overall health.”
Ten ‘Weird’ Symptoms That Are Signs of Good Health
London-based Heath, who is the chief medical adviser at wellness platform, Nico Health, has shared ten surprising bodily quirks that are usually harmless—and sometimes even reassuring.
1. That Falling Sensation As You Drift Off To Sleep
The sudden jolt just before sleep, known as a hypnic jerk, happens when muscles relax and the brain misinterprets it as falling.
Heath explains that “the brain misreads that relaxation as a signal the body is physically falling and fires a reflex to catch you,” possibly a leftover protective response from primates who slept in trees. It’s simply the nervous system being “a fraction too enthusiastically” alert.
2. Feeling Sleepy After a Pasta Dinner
Heath said that mild drowsiness after a carb‑heavy meal reflects a normal insulin response. As glucose rises, orexin‑producing neurons reduce their output, naturally decreasing wakefulness.
Research in Nature Neuroscience shows these neurons respond to how quickly glucose climbs, with suppression peaking before blood sugar reaches its highest point. Feeling sleepy afterward indicates healthy insulin sensitivity.
3. Eyes Watering When You Yawn
Heath said watery eyes during a yawn are caused by the muscles around the eyes briefly compressing the tear ducts, blocking drainage and causing overflow.
It’s mechanical, not emotional. The facial nerve triggers tear production while coordinating many other facial responses, so the watering is simply a side effect of a system working properly.
4. Darker or Smellier Urine in the Morning
Heath said this is a normal result of overnight dehydration. While you sleep, the brain releases antidiuretic hormone (ADH) to help the kidneys conserve water.
With no fluid intake for hours, urine becomes more concentrated. The change in color and smell reflects a healthy hydration‑regulation system.
5. Cracking or Popping Joints
“The belief that cracking your knuckles causes arthritis is one of medicine’s most persistent myths, and multiple large studies have found no link between the two,” Heath said.
He explains when a joint is stretched, pressure drops inside the capsule, allowing nitrogen dissolved in the synovial fluid to form bubbles that collapse with a pop. It takes about 20 minutes for the gas to dissolve again, which is why the same joint won’t crack twice immediately. The sound is harmless.
6. Odd-Smelling Urine After Eating Asparagus
Asparagus contains asparagusic acid, which breaks down into sulfur‑based compounds that the kidneys excrete efficiently. The smell itself is a sign of normal metabolism.
If you can’t detect any change in odor, it’s likely down to genetics—research shows that around 60 percent of people don’t notice the asparagus‑related change because of specific variations in genes involved in sensing scents.
7. Breaking Out After Starting a New Skincare Routine
“If you introduce retinol or an exfoliating acid and your skin gets worse before it gets better, that’s purging, and it means the product is working,” he said. “Retinoids accelerate cell turnover, forcing congestion that would normally surface slowly over weeks to arrive all at once.”
A full skin cycle lasts about 28 days, purging typically settles by the six‑week mark. Stopping the routine early is the only real mistake.
8. Feeling Emotional—Even Crying—After a Hard Workout
You already know that a good workout can send cortisol soaring and endorphins rushing, but have you ever found yourself tearing up afterward? If you have, it’s completely normal—and nothing to be concerned about.
Heath said: “When the session ends and the body shifts from fight-or-flight into rest-and-digest mode, that cortisol drops and the nervous system releases the tension it has been holding.
“Emotional tears literally contain cortisol, along with leucine enkephalin, a natural painkiller the body produces under stress. A post-workout cry is your body completing a stress cycle. The exertion leads to your brain’s prefrontal cortex region allowing feelings to surface that were otherwise being held back.”
9. Having Vivid, Immersive Dreams
A 2026 PLOS Biology study using 196 overnight recordings from 44 healthy adults found that vivid dreams may “preserve the subjective experience of deep sleep,” acting as a buffer as sleep pressure decreases through the night.
Remembering a vivid dream often reflects healthy REM sleep architecture rather than disrupted rest.
10. Your Nose Running When You Eat Spicy Food
If you’ve ever needed tissues while eating spicy food, you’re definitely not alone. This reaction is called gustatory rhinitis, and it isn’t an allergy.
Heath explained that capsaicin—the heat‑giving compound in chili peppers—activates heat‑sensing receptors in your mouth and throat. That signal travels to the brainstem, which then triggers the parasympathetic nervous system, telling your nose to start producing mucus.
People who eat spicy foods often find the reaction becomes milder over time because the nerve endings gradually adapt.
References
Markt S C, Nuttall E, Turman C, Sinnott J, Rimm E B, Ecsedy E et al. Sniffing out significant “Pee values”: genome wide association study of asparagus anosmia BMJ 2016; 355 :i6071 doi:10.1136/bmj.i6071
Michalak A, Marzoli D, Pietrogiacomi F, Bergamo D, Elce V, Pedreschi B, et al. (2026) Immersive NREM2 dreaming preserves subjective sleep depth against declining sleep pressure. PLoS Biol 24(3): e3003683. https://doi.org/10.1371/journal.pbio.3003683
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