While soft tissue injuries are sometimes able to heal on their own, they still take a long time to heal. There are three phases to healing: acute, sub-acute, and remodeling. The acute phase lasts two to four days and is when your injury just happened and the pain, bleeding, and swelling are at its worst and your body is protecting the injury from further damage. Next is the sub-acute phase which takes around six weeks. The body starts building new scar tissue to repair the injury. Finally, the remodeling phase starts and new tissue continues to grow for up to three months. Learn more!