I used to be fit as a fiddle but due to injury and personal circumstances (mainly moving to university) I fell off the bandwagon. So I started this programme at the weekend, completed w1r2 yesterday and feel pretty good. However when I tried running a couple of years ago I ended up with Achilles tendinitis and had to stop completely and I feel as though I can feel it returning. Has anyone else experienced this? For the second run I wore gel heel inserts and I think it helped but my heel is still really sore this morning. Any advice would be much appreciated!