Athletes, even if they are professionals, should undergo preseason fitness assessments, in-depth physicals and counseling by a registered dietitian.

Athletes can also undergo endurance training when their sport may not necessarily be an endurance sport in the whole sense but may still demand some endurance.

Athletes undergo a medical examination and are asked to demonstrate their skills in athletics.

Athletes undergo a medical examination and are asked to demonstrate their skills in athletics, such as running, jumping or throwing.

Athletes with cerebral palsy or similar impairments who wish to compete in para-athletics competition must first undergo a classification assessment.

Athletes may not undergo menstruation due to low fat levels; fat produces the hormone "Leptin", which induces production of "Kisspeptin".