When the plantar fascia is stressed by pain and swelling it is best to keep it at rest . If it continues to be pushed to the limit, the condition will get worse. Perhaps not all cases require immobilisation, but a cessation of intensive activity.
Initially, it is advisable to rest for as long as possible. As the days pass, along with treatment, stretching and strengthening therapies can be applied. This will gradually improve pain-free mobility. In one way or another, it is important to follow individual medical advice in this respect.