Me too; not that I often code 8 solid hours (I take out time to walk in the mountains and cook for instance) but when I anything more than 4 hours solid I have

Me too; not that I often code 8 solid hours (I take out time to walk in the mountains and cook for instance) but when I anything more than 4 hours solid I have tons of energy. After 3 hours of meetings however, not so much.