I'm looking particularly for advice from people who run, or have a history of running, sustained high mileage.
I'm looking to increase my training mileage with a view to improving my marathon time. My current PB is 3.54 off a fairly modest training volume and I'm aiming for sub-3.30 in the spring. I've been running over 40mpw consistently since late September and plan to pick up the Pfitzinger and Douglas up-to-70-mpw schedules in 3 weeks' time. I work full-time and have lots of school-age children to look after, and don't intend to do any cross-training apart from half an hour of gentle resistance work twice a week.
I'm assuming that as my mileage increases I will get tired and need more sleep, but am not sure exactly what to expect. What have other people experienced when they have increased their mileage, and can you offer me any advice?
Thanks in anticipation