How much does my age affect my sperm?
Can I do anything to make up for my age? Like eating healthy and exercising?
What you mention will certainly help, but there are a number of factors that influence male fertility. You can read more about them in this article: https://all-about-fertility.com/lifestyle-factors-and-male-fertility-what-you-should-know/
I was not aware that hot baths could have an impact... 😐
I've seen men well past their 40s become fathers - so nothing is impossible! But your age isn't the only deciding factor when it comes to your sperm quality. If you quit smoking, cut down on the alcohol and start to excercise and eat healthy, you're probably on the right track. And even if your sperm quality doesn't improve from this, your general well-being probably will 🙂