Research on Father's Fitness

https://www.psychologytoday.com/blog/the-athletes-way/201401/physically-fit-fathers-may-have-healthier-children

http://www.mcgill.ca/newsroom/channels/news/you-are-what-your-father-eats-231995

http://www.empowher.com/sexual-health/content/father-s-health-conception-important-his-babys-health?page=0,1

http://www.npr.org/sections/health-shots/2014/02/26/283081784/more-hints-that-dads-age-at-conception-helps-shape-a-childs-brain