Got ur concern n pain though it's unfortunate but common too. Ayurved offers amazing outcomes with such irregularities. Ur demand is maintaining strength n fitness and for that ur Authentic participation in Exercise is must. Its an art n technique to be masterd with calm mind. Though sedentary lifestyle n some clinical status may alter performance but can be traced by Examination n investigation and managed accordingly.

Have good sleep,  do exercise & yoga daily for 1 hour. Take hot milk 1 glass morning & evening. Avoid spicy..chilli.nd fried food Take tab. Manmath Ras.... tb.. Pushp dhanva Ras  ... nd tb pooranchndra ras  one tab. each morning & evening for 3 months...wd hot milk.. See d results or otherwise consult a sexologist personally