The rehabilitative treatment of muscle injuries is mostly conservative, but it does not always follow precise protocols. Appropriate physiotherapy, exercises, and training are essential components of the rehabilitation and reconditioning of injured muscles. The purpose of this review is to assess the good rehabilitative practices in the treatment of patients affected by muscle injuries. We performed research on Medline and Cochrane Database. Guidelines focusing on the rehabilitative treatment of muscle injuries were evaluated for inclusion. Statements about non-rehabilitative treatments were also reported only for the guidelines that mainly focused on rehabilitative treatments. Eight guidelines meeting the inclusion criteria were included in the review. Results were framed into a narrative overview. Two of them mainly focused on hamstring rehabilitation, the others focused on several muscular districts. Conservative treatment of muscle injuries is currently the gold standard, with good results in terms of both rehabilitation times and post-injury sports performance. However, there is not a complete agreement on the type of exercises and the timing of rehabilitation when these should be performed. More research is needed to draw conclusions about the use of physical therapy instruments and other rehabilitation approaches and techniques.