Heat apparently affects sperm count, whereas oxidative stress affects vitality and motility. This in vitro study controls for temperature: http://www.plosone.o

Heat apparently affects sperm count, whereas oxidative stress affects vitality and motility. This in vitro study controls for temperature: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0006446 http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjourna...