Reviewed by Jennifer Robinson, MD on0/, 014. Weight cycling is losing weight and regaining it over and over. It's called yo-yo dieting when it happens because of dieting. Weight cycles can be big (50 pounds or more) or small (5-10 pounds).
Ostriches share the order Struthioniformes with the kiwis, and other ratites. It is distinctive in its appearance, with a long neck and legs and the ability to run at maximum speeds of about 70 km/h (45 mph), the top land speed of any bird. The ostrich is the largest living species of bird and lays the largest egg of any living bird.
The ostrich is equipped with long, muscular legs built for running. Unlike other birds, who have three or four toes, ostriches have only two toes on each foot which allows for greater speed. They can sprint as fast as 70 km/h (43 mph) and hold steady speeds of 50 km/h (31 mph).