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.
Notes. 1  Different sources cite different speeds; estimates include 96â120 km/h (60â75 mph), 98 km/h (61 mph), 100 km/h (62 mph), 104 km/h (65 mph), and 104.4 km/h (64.9 mph). There is a tendency to overestimate the speed of fast animals, and claims of the cheetah running 114 km/h (71 mph) or faster have been discredited.