Slight modification

I can admit it when it's just too much, and that was too much. The first two sets went well, but I was not able to complete the third. I felt like I was quite possibly going to fall off the treadmill and collapse in a heap. And I know it's time to ease up when I start to feel nauseous! I cut the third and fourth sets from 800 metres to 400 metres. I'll probably do the same next week and then try 800's again.

That was seriously tough and I am POOPED!

It's all about pushing as hard as you can, listening to the body, knowing when it's just too much and adapting!