The workout we did today was called a Fartlek workout (I know, where'd that name come from?), and it was hard. Basically, you start your run at a comfortable "base" pace. Then for a determined distance, or time, you kick it up to almost an uncomfortable pace. When you reach your determined time, you go back down to the base pace. The tendency is to slow the base pace when you are tired. Don't do that, you want the body to recover at the base pace, that's how you train your body to perform better, tired. Which happens in a marathon! Man I was wiped out by the end. Then, I had to bike a half an hour home! Needless to say, it's been a long day.
On the upside, Husband won't make it home until late tonight, so I get to do bedtime by myself:o I need a nap!