Good hurt is more of a soreness that could be caused by the manipulation of the muscles. Good pain usually occurs after exercise or a massage and stops after the activity is finished or within 24-48 hours after the stop of activity. Good hurt doesn’t restrict the ability to carry on with your day to day activities; you may be sore and be doing them a little slower than usual but you should still be able to function and do the activities. Bad hurt is unbearable pain or pain that is too much to handle. When you reach bad hurt it’s causing more damage to muscles and further injury. During a massage the muscles should be effectively worked into so that there shouldn’t be pain. 

Pain during a massage is caused by the release of muscle tension but it can also be caused by poor technique from the massage therapist if they work too deep which can damage the muscle tissue. There are also a couple of massage techniques that are fairly painful themselves, but there should be communication throughout the massage to ensure there is no harm being done to the client. 

Some of the techniques that are painful are the fractioning technique which breaks up scar tissue/adhesions and trigger point therapy which is the releasing of the painful, hyperactive nodules found throughout some muscles. If soreness occurs after the massage then you should keep moving around so you don’t stiffen up, put heat on the area and drink lots of water to help flush out the toxins which were moved throughout the massage.