All participants in this group will receive progressive muscle relaxation for 8 weeks

All participants in this group will receive the same progressive muscle relaxation plus yoga for 8 weeks.

The participants will receive progressive muscle relaxation for 8 weeks. The muscles of the hand, arm, face, shoulder and neck, chest, abdomen, back, thigh and hip, legs and feet will be contracted and relaxed in sequence. The contraction time is 5 seconds (s), and the relaxation time is 10s.

It will be assessed using daily record of severity of problems (DRSP). It was used to capture premenstrual symptoms. DRSP contained two parts: symptoms related to menstruation (21 items) and their impairment in daily life (3 items). The symptoms included depression, hopelessness, feelings of worthlessness, increased sleeping, trouble sleeping, feeling overwhelmed, breast tenderness, breast swelling, headache, joint or muscle pain, anger, conflicts or problems with people, anxiety, mood swings, sensitivity to rejection, decreased interest, difficulty concentrating, fatigue, increased appetite, craving specific foods, and feeling out of control All items were rated from 1 ("not at all") to 6 ("extreme"). The higher the score, the more severe the premenstrual symptoms.

The spielberger state trait anxiety inventory will be used to assess anxiety for all participants. It is a 40-item self-report measure of anxiety using a 4-point Likert-type scale for each item. It has two scales: State anxiety, i.e. how one feels at the moment; and Trait anxiety, i.e. how one generally feels. Both scales consist of 20 items. its score is ranged from 20-80 on both its two subscales.

from 20-37 means no or low anxiety, 38-44 means moderate anxiety and 45-80 means severe anxiety.

It will be assessed using Beck depression inventory. It is a 21-item, self-rated scale that evaluates key symptoms of depression including mood, pessimism, sense of failure, self-dissatisfaction, guilt, punishment, self-dislike, self-accusation, suicidal ideas, crying, irritability, social withdrawal, indecisiveness, body image change, work difficulty, insomnia, fatigability, loss of appetite, weight loss, somatic preoccupation, and loss of libido. its score is ranged from 0-63 and the lowest is zero.

the SF-36 questionnaire will be used to assess quality of life for all participants. It consists of 36 questions. The SF-36 assesses eight dimensions that include: physical function, role limitations due to physical health problems, bodily pain, general health, vitality, social functioning, role limitation due to emotional problems, and mental health. the score is ranged from 0-100. 1 is for the worse health and 100 for the ideal health.