It takes 3 months or so for sperm to grow, so on that time frame the exercise can’t have made a difference to your sperm quality, it was probably fine already a

It takes 3 months or so for sperm to grow, so on that time frame the exercise can’t have made a difference to your sperm quality, it was probably fine already and you just had to wait to get lucky. Unless you’ve been trying for over a year that’s just a perfectly normal amount of time for it to take anyway