5.6 Retired Athletes  Returning to Competition    5.6.1  If an International -Level Athlete or National -Level Athlete in WAKO’s Registered Testing Pool retires and then wishes to return to active particip ation in sport, the Athlete shall no t compete in International Event s or National Event s until the Athlete has made himself or herself available for Testing , by giving six (6) months prior written notice to WAKO and their National Anti -Doping Organization .