The immune system functions more efficiently offering greater resistance to disease, and your child’s body functions closer to its innate capacity. Your child can efficiently respond to internal and external environmental stresses such as germs, changes in temperature, humidity, toxins, pollen and other things he/she comes in contact with.The immune system functions more efficiently offering greater resistance to disease, and your child’s body functions closer to its innate capacity. Your child can efficiently respond to internal and external environmental stresses such as germs, changes in temperature, humidity, toxins, pollen and other things he/she comes in contact with.