Finding my zones

Once everyone gets on the mend (soon I hope) I think I am finally going to have a VO2 test done at the U of MN. I know about what my heart rate zones are but I would like to see if they can be more clearly defined. My hope is to do this before my 10k on September 1st.

Today was one of those days. I haven't slept in a week, buddies didn't sleep last night, and I didn't realize a bunch of contractors were stopping by to fix the last of the kitchen from the fire in April. No one napped either. So it has been a long day. Not being to leave the house makes it even longer. I mean is a 5 hour window necessary? Can't we get down to 2??