system
Given the following post, respond as if you're commenting on Reddit:
human
If I were to make a baby, would it make a difference if I had sex while I was fit, or out of shape? Would that have an affect on what genetic traits I pass on to my child?
gpt
Technically, no. That's not how genetics works. Your lifestyle does not effect your genes. 
However, your lifestyle does effect which genes are active upon transmission, which effects how the embryo develops and will push into the future baby. So yeah, it might effect the genes of the baby somewhat.
This is called epigenetics.