Diet for strength, stamina and weight loss? Is there an app for that?

Low carb, high prote. Low carb diets with high protein intake. After 15m of vigourous exercise, the bodies main energy source is from fatty acids. This conversion happens more quickly on a low carb diet, one fallacy is the brain needs sugar as its primary fuel. No, brains can adapt and use fatty acids as a direct source of energy. Plus the diet is good for weight loss, but only if you have an apple build.