Had a long sleep and seem to be OK. No point taking chances after such a good block of training, so precautionary rest today, hopefully back on it tomorrow.
Running1:14:55 [2] 14.82 km (5:03 / km) +345m4:32 / km
And just 20 hours later...felt shocking. Crawled up the hill and dragged myself around this. Then deteriorated for the rest of the day anticipating the worst.