My husband has a theory that men who have higher testosterone have boys and the men with less have girls. He has 5 boys. Not all mine. 2 with ex. But his dad had 4 boys. He thinks his brother will have a girl if he has a baby one day because he's skinny and doesn't have the muscles and broad shoulders he has. My dad was skinny and Tall and no shoulders too and he had me. So maybe its true lol
My biological father was of average build, had two boys and two girls. My mom's biological father was tall and lanky and had a pretty even number of boys and girls. So far we have two boys. I heard that the diet of the mother while TTC can help determine the sex of the child. Lots of fruits and veges is supposed to make the likelihood of a girl higher because the sperm that carries female genes prefer a more acidic diet. So the less meat you eat the more likely you are to have a girl. It may or may not work.
My DH is nothing but muscle and broad shoulders, a football player, and firefighter. Despite all of these traits, he still have very low T and we have all girls. SO just being muscular doesn't mean you have higher testoserone.
Our best friend has 3 boys and 2 girls (with one more on the way that is a girl) and he is small and not muscular at all.