Some chickens lay an egg almost every day, others every 1.5 to 2 days. Younger hens (called pullets if less than one year old) will lay smaller eggs at larger intervals until they reach maturity.
The caffeine effect. There are several reasons why women should limit their caffeine intake to less than 200 mg per day during pregnancy. Caffeine is a stimulant that influences the sympathetic nervous system to give you a buzz, sending messages to and from your brain more rapidly.
ACOG says that so far, mild caffeine intake (less than 200 mg) isn't considered to be a major cause of miscarriage or premature birth. One large study, however, found that mothers who consumed more than 300 mg of caffeine a day were more likely to give birth to babies who were small for their gestational age.