Plantar fasciitis is an inflammation of a thick, fibrous band that runs along the bottom of the foot. It usually comes because of repeated trauma to the bottom of the foot, such as running or jumping. It can be a stubborn, painful injury, especially for those who do a lot of walking--such as golfers--and can take many months to heal. Stretching exercises are important for the healing process, since decreased flexibility and tightness in the Achilles' tendons are a common problem with this condition. Here are a few suggestions.