hello user , thanks for contacting health care magic for your health related query . i understand your concerns as sexual health is very important issue - you should understand two things - first that just by looking the external color and texture of semen , its count,mobility and morphology can not be predicted and you would be needing a semen analysis for that , secondly , yes lifestyle modification like keeping away from addictions , moderate exercise , healthy diet etc can have a positive result on semen parametres as per various studies . so you can have a semen analysis done from nearby pathology lab and consult your doctor . good luck