1: Wearing headphones good or bad ?
Wearing headphones is not bad, but wearing them for more than 30 minutes is bad for the ears. When you put on headphones, you cover your ears from the natural air, which increases the production of bacteria by 700% in 1hr. Your eardrum naturally can not bear the influx of bacteria in that quantity so it starts to react by paining or hearing loss in long term.
Secondly, when you are listening to fast music/ high beat sound which goes direct to your brain due to headphones, it affects the fine tissue/membrane of the brain eventually listener becomes hyper or excited which is bad in long run.
2: Benifit of afternoon nap
with one study suggesting a 90-minute nap may help lock in long-term memories. But Walker’s research, published in the journal Current Biology, finds that another phase of sleep, called nonrapid eye movement (NREM) is most closely linked to the learning boost provided by a nap.
Walker and his colleagues recruited 44 volunteers (27 women and 17 men) to come to the sleep lab at noon. First, the volunteers were given a task in which they had to memorize 100 names and faces. Then they were tested for how well they recalled the face-name matches.
Next, the researchers tucked half of the volunteers in for a nap between 2 p.m. and 3:40 p.m. The scientists measured the napping volunteers’ brain waves as they slept. The other group of participants stayed awake and did daily activities as they normally would. At 6 p.m., both groups memorized another set of 100 faces and names and were tested on their memory. (The experiment was set up so nappers had more than an hour to shake off any remaining fuzziness before the test, Walker said.)
3: chewing gum can speed up thinking
Researchers have found scientific evidence to confirm that chewing gum can speed up thinking and make you more alert.
Original theory is that chewing increases arousal and leads to temporary improvements in blood flow to the brain,
Brain of boys and girls scanned with functional magnetic resonance imaging (fMRI) to see which areas were active.
Results showed that alertness and reaction times improved while chewing gum. Men and women who were not chewing took 545 milliseconds to react, compared with 493 milliseconds among the chewers.
It will effective in times of exam.
4: In which temperature happens best sleep ?
The temperature is matter for sleep .That’s not just a guess, though ,Science backs it up.
According to the National Sleep Foundation, the best sleep happens in a room that’s around 60 to 67 degrees F (15° to 19° C) for adults and children, and between 65 and 70 degrees F (18° to 21° C) for babies and toddlers.
By working all day, your body temperature goes up . When you get sleepy, your temperature starts to drop to get your body into sleep mode .A warm room prevents your body from its optimal sleep temperature, causing a restless night sleep and even insomnia. If you wake up sweaty, that’s a sure sign that your room is too warm .
Sleeping with the room too cold, though, isn’t good for sleep either. Being too cold can make your muscles contract to stay warm, preventing you from relaxing and falling into a deep sleep.
5: laughter is strong medicine
Laughter is strong medicine. It trigger healthy physical and emotional changes in the body. Laughter strengthens your,
immune system,
boosts mood,
diminishes pain, and
protects you from the damaging effects of stress.
Nothing works faster or more dependably to bring your mind and body back into balance than a good laugh. Humor lightens your burdens, inspires hope, connects you to others, and keeps you grounded, focused, and alert. It also helps you release anger and forgive sooner.
As children, we used to laugh hundreds of times a day, but as adults, life tends to be more serious and laughter more infrequent. But by seeking out more opportunities for humor and laughter, you can improve your emotional health, strengthen your relationships, find greater happiness and even add years to your life.
EXACT WAY 
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