Seriously sore muscle why - what should I do?

[morningglory]

When I started the programme had no problem with my muscles being sore or hurting. Have done 3 runs using a interval training programme, so have been pushing myself and my muscles have been a little sorer. Today decided to just go out for a 3k run and see if my speed had improved but my right muscle (the one above your achilles) started to hurt and eventually I ended up walking after 2.5 miles. I stretched out but can hardly walk now. What is the best thing I can do?

[KTMACNESS Graduate]

Apply cold and rest (frozen peas are excellent and very mouldable to specific places) If it doesn't improve or seriously affects your mobility you'll need to see a sports physio. I know this from reading running magazines and not actually getting an injury the running fitness website has lot's of advice on running induced soreness so I'd suggest popping onto there as well and seeing if anyone else has had a similar thing happen.

Hope it gets better soon!