Hi,

I'm building up toward my 1st marathon in January and just hit the 30+ miles per week mark. At the end of my running week now, I crash hard ... falling asleep early that night and sleeping 3 or 4 hours more than normal the next couple of days. I'm 50 and don't think I have any underlying medical conditions ... just curious if this is a normal adjustment for my body?

Here's this weeks schedule (in miles) if that matters 10-4-6-4-6-4-0. The last 6 mile day is around marathon pace, but everything else is even slower. No speedwork at all.

--Thomas