Rats. I tried too hard this evening. Decided to use the C25K+ podcast for speed on the treadmill. Everything went fine for the first 4 intervals. I went from 5.5 mph to 8mph and it was strenuous but comfortable. Then on the second to last one I felt a twinge that got worse. I took the speed down, rubbed the offending hamstring and finished the intervals.
So it's time to hit the foam roller and see if I can sort this out. Any advice gratefully received. I can only feel it when I stretch it so I don't think it's a bad strain.
As Monty Python would say - "I've had worse"
I also did the ice bucket challenge afterwards which was good fun if you want to look here's a link