
There’s no “safe” number of cigarettes you can smoke per day. Any number of cigarettes can increase your risk of developing cancer.But the more you smoke, the more likely you are to get cancer. A 2021 studyTrusted Source looked at 229,028 Australian participants to estimate how likely people are to develop cancer by age 80,
In the study, only 1% of people who’d never smoked developed lung cancer by age 80. The study found that the risk of developing lung cancer increases to 14% if you smoke cigarettes.If you smoke one to five cigarettes per day, your risk is around 7.7%, and if you smoke more than 35 cigarettes per day, you’ll have a 26.4% chance of developing lung cancer by age 80.Bear in mind that you don’t need to smoke in order to develop smoking-related cancers. Secondhand smoke also increases your risk of developing lung cancer.
Why is that?

The Answer is:
If a vehicle drives in a straight line at high speed for a long time, it will cause the driver’s vision to become fatigued, attention to be distracted, and even lead to drowsiness, which is unsafe. Therefore, driving on a road that changes from straight to curved will stimulate the driver’s concentration better.
Not to mention, builders also consider that a powerful vehicle can easily climb a steep road, but a heavily loaded truck or a passenger vehicle cannot. Moreover, a road with a straight, steep incline is extremely dangerous when descending, as it is difficult to control speed. A steep incline can also affect the driver’s visibility, making it hard to see ahead.
When designing curves, builders try to increase the curve radius and reduce centrifugal force, allowing vehicles to handle the turn more easily even at high speeds.
In summary, while winding roads may take more time to travel, they ensure greater safety. Driving on a steep, straight road is akin to playing a dangerous game that most people wouldn’t want to try.
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