Silvia Azaña, an embryologist at inviTRA, talks in this video about the advantages and disadvantages of exercise for male fertility:
The main advantages of sport in relation to male fertility are found mainly when it is practiced in a moderate way. In this way, sport can lead to an increase in testosterone, a better oxidative balance in the semen, which would reduce oxidative stress, and an improvement in seminal parameters.
On the other hand, sport presents disadvantages for male fertility when it is practiced very intensely, as is the case with elite athletes or competitive athletes. In this case, a decrease in testosterone levels and an increase in oxidative stress could occur, which could cause damage to the genetic material of the sperm and has been linked to poorer sperm quality and an increase in DNA fragmentation.
