1-While muscle aches are inevitable after running more than 26 miles, it should be possible to get energy levels back to normal within one or two days.
The best way to run a marathon is to keep up a steady pace, and not to sprint off from the start.
2-It is also thought that people with low self-esteem, a pessimistic outlook on life and difficulty coping with stress are more prone to depression.
3-People who have obsessive compulsive disorders resort to ritualised behaviour as a means of overcoming irrational fears.
4-Asthma attacks are caused by the airways over-reacting to certain environmental factors. They then become inflamed and clogged.
5-Asthma is a controllable but not curable disease. The World Health Organisation (WHO) says 100 to 150 million people around the world are asthmatic and the number is growing by 50% every decade. It causes 180,000 deaths a year.
6-However, many dentists who have hitherto practised general anaesthesia have extremely sophisticated high tech surgeries.
7-They could use sedation techniques, where patients are calmed so a local anaesthetic can be injected, to help anxious patients overcome their fears, he said.
8-Many doctors believe that once a person's bodyweight has fallen below a certain level, they are no longer capable of making rational decisions.
9-These are the parts of blood that are heat-treated to make them safe. The process kills certain viruses, including HIV and hepatitis B and C. The technique has been available since March 1985, although in France, controversially, it was not introduced until August of that year.
10-In most countries all the blood used for transfusions is now tested for HIV. In those countries where the blood has been tested, infection through a blood transfusion is now extremely rare.
11-The epidemic is having a corrosive effect on the economies of the continent which may set back its development this century. However, the report does offer some hope. There are signs that the annual numbers of new infections may have stabilised in sub-Saharan Africa.
12-The latest statistics show a steady increase in the numbers of women testing positive, often after taking the test during pregnancy. Many are married, from poor households, and have only had relations with their husbands - who have not been so faithful. Doctors admit changing this will be tough.
13-"The potential of the epidemic among the heterosexual population is very worrying because it is the vast population of Brazil," said Dr Kalichman.
14-Their job is certainly worthwhile, but research shows that long-distance truck drivers are one of the highest risk groups for contracting the deadly HIV virus.
15-Truckers spend months on the road without seeing friends or family. Lonely and vulnerable, they often form local relationships, or seek casual sex.
16- The issue of aids has traditionally been a very sensitive one in Iran, with few official records on the illness available, and little open discussion of the disease.
17-But some evidence shows moderate drinking can help ward off stroke, while heavy drinking may increase the risk.
steady environmental irrational inevitable self-esteem
Rational sophisticated available anxious treated curable
steady corrosive vast annual tough rare faithful
That is the real problem, UN officials say. Although it may start in the vulnerable groups like drug users, sex workers and travelling workers, it then spreads to the general population.
