Your metabolism is the rate at which you burn off energy from the food you eat. Everybody's metabolism is slightly different, so everybody has slightly different needs when it comes to calories. As a general rule, the smaller and more physically active you are, the faster your metabolism.
Giardiasis is an intestinal infection of man and animals caused by a protozoan parasite Giardia intestinalis (also known as Giardia lamblia). Giardia is a simple one-celled parasitic species; it is not a worm, bacteria or virus. The parasite occurs worldwide and is a common cause of Traveler's Diarrhea in people.
Giardia Signs and Symptoms: An Overview. When a person becomes infected with the parasite that causes giardiasis (Giardia lamblia), the parasite begins to multiply within the intestines. After one to two weeks (the average is seven days), Giardia symptoms can occur.This period between becoming infected and the start of symptoms is known as the  Giardia incubation period..iardia Signs and Symptoms: An Overview. When a person becomes infected with the parasite that causes giardiasis (Giardia lamblia), the parasite begins to multiply within the intestines. After one to two weeks (the average is seven days), Giardia symptoms can occur.