[keiferski]

There have been similar studies on male fitness level at the time of conception.

There is growing scientific evidence in human and animal studies that should inspire every father-to-be to start exercising more and eating healthier before conceiving a baby. A wide range of studies have found that fathers who are obese at the time of conception pass on a predisposition to their children and grandchildren to be overweight, to develop diabetes, or both.

https://www.psychologytoday.com/us/blog/the-athletes-way/201...