Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. As the research is stating, progressive motility is becoming one of the most important factor in achieving successful pregnancy. Certain co-enzymes and antioxidants ( available in tablet and capsule form) help in increasing sperm quality but still most important factor remains lifestyle. I would suggest weight reduction and exercise . Increase fruit content and reduce on carbohydrates. Avoid wearing tight dresses and resume to age old loose undergarments (reduces temperature and increases sperm quality). Further get a scrotal doppler done to ensure that you are not developing varicocele. Hope I have answered your query. Let me know if I can assist you further.