Most sperm semen produced

In , she joined the STDcheck. How to Fall Asleep in 10, 60, or Seconds. Niederberger says the idea that wearing boxers will help boost fertility is probably misguided. During internal fertilization , however, fertilization occurs inside the female's sexual organs. Finally, it is possible that ejaculate parameters not measured in our study followed patterns consistent with habituation. Your doctor can determine how healthy your sperm are and whether conception is possible, as well as advise you on next steps. Behavioral Ecology, 25 5 , —