Final answer:
Having both high and low arch conditions can have negative consequences for the legs, including strain, instability, overpronation, and increased risk of injuries.
Step-by-step explanation:
Having both high and low arch conditions can lead to various knock-on effects throughout the legs. For instance, people with high arches may experience issues like excessive strain on the ankles and knees, limited shock absorption, and reduced stability. On the other hand, individuals with low arches may be prone to problems such as overpronation, flat feet, and increased risk of injuries like shin splints and plantar fasciitis.