Hi there. I'm going to keep this as brief as I can because I really would like some help and advice and I know how busy we all are (and believe me, I can waffle on with the best of them!) Been running since mid April, literally from couch to 5k Have done numerous 5k runs as training and one race event My usual time is 40 mins+ so I'm v.slow (can't seem to improve but that's another story) I have done 7km, the last time was on Weds just gone, this is my furthest distance to date My problem is this: My last two runs (Friday and today, Sunday) , and some previous ones, I have felt that I just can't run! I know this sounds weird but as soon as I start running (after a good 5 min warm up walk), I feel my breath becoming difficult to catch (I'm not asthmatic and have no pains) and I feel like my legs can't carry me. At first, I thought this was the "terrible 10 minutes" that I've read about, but it goes on for at least 3km and sometimes for the entire run. Today, it even made me stop at 2.7 miles and despite walking for a while I really only managed another 1km off and on, mostly off. Why is this happening now? I honestly feel that I can't even run 5km easily, whereas leading up to my 5k race at end of June, I was bashing out 5's 3/week. I was looking to sign up for a 10 and I've got the training programme to follow but my body doesn't seem to want to and I'm worried I won't manage it. Explanations I've considered - maybe they are true??? Hot weather?I try and run after 4pm so not in the burning sun although it can still get hot. I drink throughout the day (at least 2litres) and sometimes take water, not always as many people suggest it's not necessary for 5k. My lungs/legs are not strong enough? I would believe this more if I hadn't been able to run 5k at all, when in fact I just seems to be going backwards with my abilities. Also, I do some cycling and core work but maybe not enough. Is it just mental? I've heard that running is 90% mental and I do often have this feeling just as i head out that I can't possibly run (I don't know why). At home, on the sofa, I have no problem visualising myself running along like a graceful gazelle (if only!) but when it actually comes to that very first run-step, bam! The physical feelings kick in which then reinforces my belief and I battle my way round if I can. Mentally I love running (and I'm Paula Radcliffe) but physically I fear I'm more Mrs Blobby! Thanks for reading, I'd love your opinions and advice as I'm really stuck and I jus want to enjoy my runs.