https://www.amazon.com/Natures-Answer-Alcohol-Free-Vitex-1-Fluid/dp/B00014F9YC/ref=sr_1_15_s_it?s=hpc&ie=UTF8&qid=1518465505&sr=1-15&keywords=vitex&th=1
I used the above one.
鍛煉悠著點來阿。 瑜伽不錯。 等身體更好些再加強度大些。 自己把握阿。