Does smoking help to make you slim !
nicotine from cigarettes travels straight to the brain where it links up with nicotinic acetylcholine receptors and sets in motion a whole series of hormonal and physical reactions.
nicotine from cigarettes travels straight to the brain where it links up with nicotinic acetylcholine receptors and sets in motion a whole series of hormonal and physical reactions.These include the dulling of hunger pangs and a reduction in the appetite, and so it is true that smokers do eat less .On a purely practical level as well,the fact that smokers " hand and mouth are engaged in the business of smoking means they are less likely to snack. At the same time, nicotine makes the heart beat faster ,raises blood pressure and increases intestinal functioning, so that the body uses more energy. This is why smokers weigh on average 2 to 3 kg less than nonsmokers.
The reason people put on weight when they give up smoking is because smoking releases hormones in the brain's reward centre, known scientifically as the nucleus accumbens. People who try and quit smoking therefore have to look elsewhere for the accustomed feeling of reward or comfort,and many turn to food instead. At the same time, quitting cigarettes improves one's sense of taste and smell, which makes many new nonsmokers enjoy their food more so that they eat larger quantities than before. In most cases, however ,they only put on a few kilos which they can lose by finding other distractions and exercising more.
Smokers blow smoke rings.........
The requirements for smoke rings include having smoke in the respiratory tract, a certain amount practice and lips that are set in an almost perfectly circular shape. The trick is to breath out relatively small amounts of air in order to create circular swirls. Th air flows from the throat the mouth and and is slowed down slightly at the sides when it reaches the lips, although it continues to travel unhindered through the centre of the mouth. Ideally ,this situation creates a ring of turbulence. The air in this ring rotates relatively quickly and so traps smoke practice ,thereby making its shape visible. If this happens in a relatively draught-free surroundings, the smoke rings may last several minutes.
The Earth can also produce smoke rings -which are occasionally seen when a volcano erupts- and so can jet aircraft and guns when the conditions are right