Answer by  
                                                                                          RobertoCastro (112)
                                                            
                          
                          
                                                          Squats are great for knee strengthening but make sure you take them slowly until you are in good shape.  Start with slight dips or a long stride where you hold position in a slight dip for 2 seconds and then rise.  As you get stronger you can add weight or dip lower.