He discovered he was gluten and caffeine-sensitive.
The change in his Gut health was the first thing he noticed. He cut out fast food, and his gut health greatly improved. He increased his water intake and reduced bloating. With improved gut health, he also was able to improve his work output. He had increased productivity, more focus, less need for bathroom breaks, and overall more energy. He no longer suffers from migraines and headaches. Arthur attributes his success and calmness to Time-Advantaged Eating.