At the ripe old age of 59, I'm pretty much done with running due to chronic injuries including some serious tendon ruptures and now OA (28 yrs of running). So, it's back to bodybuilding, which I competed in for 10 years after college before transitioning to distance running.
I'm student of the Silver Era Bodybuilders (1940s to early 50s), and the incredible Silver Era Diet. It was clean and natural; everything organic:
https://youtu.be/bVfnf7ir-g4"Whole, natural foods."
"Fruits, vegetables, meat, fish, butters, milk, grains, potatoes."
"CLEAN eating."
The problem now is there are so many crazy diets with all this keto, low-carb, no-carb, sometimes carbs, Vegan, etc. type diets. And the quality of our food is terrible if you don't go 100% organic on everything. And people don't have any sense of portion control - it's full throttle and stuff yourself until eternity. And people don't understand what are a carb, fat or protein is. And hardly anyone excercises regularly anymore - with a commitment to both cardio & strength training. This is why we're so fat and unhealthy in today's age.
The silver era nutritional program will work for all sports.
It's CLEAN eating with a wide variety of food groups.