Causes of Fluctuating Body Temperature. Naturally, your body changes its temperature to comply with the changes in your surroundings, which has been experienced by everyone. Your body will lose heat when the temperature of your surroundings is on the higher side.n the other hand, your body will try to keep it warm when the temperature in your surroundings is low. Your body completes the task by making your blood vessels to send blood from small capillaries to the warm parts of the body, which in turn signals your muscles to shiver.
Donât Skip a Step. 1  A child who has outgrown the internal harness or height limitations of a forward-facing child safety seat. 2  Within the range of 40 to 80 pounds but under 4â9â. Within 4 to 8 years of age and is at least 35â tall.
Seat belts are made for adults. Your child should stay in a booster seat until adult seat belts fit correctly (usually when the child reaches about 4 feet 9 inches in height and is between 8 and 12 years of age). Forward-facing-only seats â Seats can be used forward-facing with a harness for children who weigh up to 40 to 80 pounds (depending on the model). 2  Although manufacturers are not currently making any forward-facing only seats, many remain in use from previous years.