I've just done the first run of Week 7 last night (ouch) which I found to be more difficult than when I did the same run at the end of week 6.
With the longer runs my legs start to ache and feel like lead about halfway through and to combat this I tend to slow down when I struggle - last night I had pretty bad lower back pain as a result of slouching when running slowly.
Any tips for combatting "heavy legs" and lower back pain?
I'm also feeling quite frustrated that I'm nowhere near getting 5K done in 30 mins!! Last night I got 3.75 K done (including the 5min warm up walk and 5min cool down walk). I just can't imagine that I'll ever get to 5k with an extra 5 mins at the end of the programme?