Justification for study: Fewer research has been conducted to understand the impact of MC phases on psychological measures among sub-elite eumenorrheic athletes. This study will help the coaches and athletes to tailor the training program at par with the MC phases and related symptoms. 

The study will be conducted after obtaining permission from the IRC and IEC approval, CTRI registration, and approval will be obtained. 

Subjects will be enrolled based on inclusion and exclusion criteria. The participants will be volunteering for the study. 

An informed consent form will be explained, and a signed consent form will be obtained for approval. 

On the first visit, demographic, sports-related, health-related, height, and body mass details will be taken. 

On the same visit, participants are explained about the procedure and familiarized with the protocol. 

The time (plus or minus 2 hours of the initial testing session), dietary intake, and nutritional supplements will be standardized or repeated during the testing period, and all will be informed to the participants on the same day. 

Before beginning the testing protocol, they will be required to complete the questionnaire (1), which is a pre-test questionnaire. After completing the questionnaire, participants will be asked to perform a series of tests. The tests will include assessments for Flexibility (Sit and Reach test), Muscular Endurance (Push-ups, Partial curl-ups), Anaerobic capacity (Wingate test), Muscle Power (Counter Movement Jump), and Agility (Illinois test). Following the tests, participants will be asked to complete a post-test questionnaire. This process will be repeated on nine separate visits over three months, and participants will be reminded of this protocol before each test.