1. Smoking

Smoking particularly affects the irritation of the intestines. The digestive system works on the whole body, and nicotine binds with oxygen in the blood, then it’s more easily absorbed. Scientists warn that a cigarette after a meal dramatically increases the risk of bowel cancer and lung cancer.

2. Drinking Tea

When you drink tea after your meal (especially dinner), you let it interfere with digestion. This is because a chemical tannin is present in tea and coffee which interferes with iron absorption. Though the beverages are known to relieve mental and muscular fatigue, they should be consumed only in moderation.

3. Fruits

Fruits are considered to be healthy but unfortunately their consumption after any meal (like lunch and dinner) is considered harmful. Eating fruits close to a meal, especially right after a larger meal and combine with other foods, it’s held in the stomach too long along with other foods and will rot and ferment in the gut. If you experience indigestion, heartburn, burping and other digestive discomforts and you blame on the meal – it could be the combination of the food, the fermentation with fruit that causes your upset stomach.

4. Sleeping

According to the Massachusetts Institute of Technology,  there are good reasons for not sleeping right after a meal. While you’re napping, your body is hard at work digesting that last meal, and this can lead to problems ranging from indigestion, weight gain to a possible increased risk for a stroke.

5. Taking a Shower

When you bathe, your surface temperature increases according to the temperature of the water you use. When the water makes contact with your skin, your brain processes this change in body temperature as an immediate need to direct blood to your skin and bring your temperature back to normal. If you use cold water, your blood vessels dilate. As large volumes of blood in your skin dilate to dissipate the excess heat. This in turn causes more blood to flow in your skin.

Source: http://doctor.ndtv.com

Source: doctor.ndtv.com