Story for Intervals - ouch.

Tough session. Feeling a little offish...probably the lack of sleep and feeling of flu coming on.
Felt that during the run, I was able to run and maintain pace where needed but the problem i found most troubling was the little pain at the bottom of my right foot.
Used my New Balance Fresh Foam Zanter (v1) and usually they are fairly good at speed work but today they just felt a little unsupportive.