Answer:
Plantar fasciitis
Explanation:
Plantar fasciitis is a disorder of connective tissue which takes place at the insertion site of the ligament or connective tissue called plantar fascia to the bone. This is caused due to the breakdown of the plantar fascia (connective tissue) which supports the foot and the breakdown of the collagen.
The disorder results in the pain at the bottom of the leg and the foot which could affect both feet. The pain is observed during the first step of the day.
Thus, Plantar fasciitis is the correct answer.