What characterizes lordosis in the human body?

Lordosis is characterized by an exaggerated inward curvature of the spine, specifically in the cervical and lumbar regions. This condition often refers to a noticeable arching of the lower back and can also involve the neck area. A healthy spine has natural curves, but when these curves become exaggerated, it can lead to discomfort or structural issues.

In the context of the options provided, the choice that accurately reflects the nature of lordosis specifically notes the cervical and lumbar regions. This distinction is important because while the thoracic and sacral regions have their respective curvatures, they are not classified as lordotic. Understanding lordosis in this manner is essential for professionals in fitness and health fields, as it relates directly to posture, balance, and overall spinal health.