The consumption of is the leading cause of severe allergic reactions in the United States. peanuts
shellfish
milk
eggs

Ithink it's traditional 

The skills he need is to practice seeing and hearing

You should only go in for less than 10 minutes at a time, or avoid them altogether, especially in the early weeks. studies have shown an increased risk for birth defects in babies of women who had an elevated temperature before 7 weeks of  pregnancy.