Heard, tongkat Ali or croc's part can increase sperm count + stamina. But as long as your hubby exercise more will Increase sperm count and inturn increase stamina. That's why in sport men's are obtained from any sexual activity prior to any tournament or race.
As for me I found out royal jelly actually increase my ... But I am not sure if it will also increase sperm. Can also give low graded tong chong chau a try.
Ever try prostate massage?