I noticed I can be intensely focused for about 4 to 6 hours max, after that I'll be "washed out" and I become error prone for complicated tasks

Unfortunately the 9 hour in office format constrain me to stay on my seat, so I'll try work on easier things at that time while beeing quite unproductive

How to we bring this fact to companies? It seems only the most ""progressive"" companies like Facebook or Google really understood this