i am a skin man, non-physical workers, i found when i physical work, i have high energy level, but when i non-physical work, I always have trouble concentrating and my physical strength is declining. — I don’t think this is just my imagination.
So, I began to study the thesis, attempting to find the “energetic” approach from it. My interest and topic were: the relationship between fitness and energy.
so,i research ,and the result is: