Let's start with your first claim

You are claiming that people with high IQ are also taller, healthier, and more athletic

Where the hell did you get that idea?

Terman found his answers in his longitudinal study on gifted children: Genetic Studies of Genius.[12] Initiated in 1921, the Genetic Studies of Genius was from the outset a long-term study of gifted children. Published in five volumes, Terman followed children with extremely high IQ in childhood throughout their lives. The fifth volume examined the children in a 35 year follow-up, and looked at the gifted group during mid-life.[13]

Genetic Studies of Genius revealed that gifted and genius children were in at least as good as average health and had normal personalities. Few of them demonstrated the previously-held negative stereotypes of gifted children. He found that gifted children did not fit the existing stereotypes often associated with them: they were not weak and sickly social misfits, but in fact were generally taller, in better health, better developed physically, and better adapted socially than other children. The children included in his studies were colloquially referred to as "Termites".[14] The gifted children thrived both socially and academically. In relationships, they were a less likely to divorce.[6]
Additionally, those in the gifted group were generally successful in their careers: Many received awards recognizing their achievements. Though many of the children (affectionately known as “Termites” [6]) reached exceptional heights in adulthood, not all did. Terman explored the causes of obvious talent not being realized, exploring personal obstacles, education, and lack of opportunity as causes.[9]