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.
This study finds an effect at 200mg a day. Caffeine takes longer to be broken down in the body during pregnancy and it reaches the baby through the placenta. The developing baby is not great at processing caffeine and it can increase the baby's levels of stress hormones. This latest study found that babies of women whose caffeine intake was 100mg a day had birth weights of 21 to 28g less than babies of women who didn't have as much.