Work: going for a 2 hour run over the weekend, thinking about some problem between the 60th and 80 minute, spending the next week implementing it. (typing it in

Work: going for a 2 hour run over the weekend, thinking about some problem between the 60th and 80 minute, spending the next week implementing it. (typing it in, telling others about it on meetings, whatever) Also: this is why hourly billing is pointless. You bill for the low value activity and can't bill for the high value activity.