What is causing my foot arch pain on both legs when I walk or play badminton?

 You may be experiencing pain because of plantar fasciitis, which is a condition that affects the band of tissue (the plantar fascia) that extends from the heel to the toes. This condition is often caused by overuse or repetitive strain, and can result in pain and inflammation.

There are a few things you can do to help relieve symptoms of plantar fasciitis. For example, you can try ice therapy, stretching exercises, and wearing supportive shoes or orthotics. If the pain is severe, your doctor may prescribe medication or recommend surgery.