So I've just attempted (and failed) W6R2. I always find the first 10 minutes or so of any run the bit where I struggle the most, but today I had to abandon my run after the first 10 minutes, as my legs felt so heavy and stiff, and I was really struggling to keep them moving. I was just wondering if me giving blood on Tuesday is the reason I've struggled today, as I managed to do W5R3 relatively easily on Sunday?
I've seen many posts saying going back to interval running can be a struggle after W5R3 if you overdo it, but I wasn't going at a particularly fast pace. I'm so keen to complete the programme, but today's struggle has made me feel a bit of a failure!
Any thoughts are very much appreciated!