Stretching after your workout is equally as important as stretching before. Since it increases blood flow to your muscles, stretching afterward can lessen muscular soreness and aid in muscle recovery. If you already have an injury stretching it may not be best because it can cause more strain and prolong the injury. states stretching may not prevent all injuries, for an example you can still suffer from an overuse injury. You should consult with your physician about the best stretches for you if you have any health concerns.