This study evaluated the contribution of regular home practice in the treatment of tension headache (HA) with progressive muscle relaxation (PMR) by giving 14 tension HA sufferers 10 sessions (over 8 weeks) of standard PMR with home practice and application instructions while 13 additional patients received the same PMR training (except for the omission of cue-controlled relaxation) with no home practice or application instruction. A third group of 6 patients merely monitored HA activity. Both treated groups showed significant reduction in HA activity, whereas the symptom monitoring group did not change. The 2 treated groups did not differ. On a measure of clinically significant reduction in HA activity (at least 50% reduction in HA activity), however, the group receiving home practice instruction (50%) showed a trend (p = .056) to improve more than did those receiving PMR without home practice (15%).