Questions about athletic performance and genetics

Performance Sensor

What advantage does a DNA analysis confer when it comes to sports?

How does a customer save money on this?

What is the greatest benefit?

I do a lot of physical activity - between 4-6 times a week. Usually I do crossfit twice a week, high intensity interval training twice a week, and two hours of strength and endurance training twice a week. Is the recommended kcal count also sufficient on the days when I do HIIT or do two hours of training (usually strength first, then endurance)? In addition to this, an average calorie intake per day was recommended to me. If I understand this correctly, it is an average over one week. What if I burn more kcal than stated through physical activity? According to my understanding, it is counterproductive to train when in caloric deficit, so do I have to take extra calories to compensate for this?