and 'hit the wall'."So, simply put, if your body runs out of glycogen, to keep running it has to resort to its only other fuel source - stored fats. Processing fats requires a lot more oxygen, leading you to slow down to a jog or even a walk, so that more

programme are regular walk breaks and a very long run/walk, which peaks at 26 to 29 miles. Pierce's programme emphasises faster running – speedwork, a tempo run and a faster long run – on three running days, plus two cross-training days. "The philosophy

pool."You could also practise your open-water skills if you're by the sea. You can still play around in the waves and have plenty of fun, but at the same time you will become used to running into the sea. You can also learn how to bodysurf back to dry

. If your baby seems uncharacteristically sluggish, consult your obstetrician. Listen to your body If running becomes uncomfortable as your pregnancy progresses, switch to fast walking. Or consider swapping the treadmill for a new contraption

?In a word: no. Well, you could be in theory, but only if you need a crane and a flat-bed truck to get to the shops. Basically, if you can walk, you can run - it's just that you might be a little slow when you start and you might need to take walking

with some club mates when a pavement collapsed under my foot. It came up like a football. It took nearly 3 months before I could properly walk, let alone run and that’s when I hit the low point and didn’t really do anything for about 8 or 9 years afterwards

’ll be racing in are comfortably worn in – the same goes for your vest, shorts and socks. Eat a familiar breakfast that you know you can run on, and if you’re not sure about how early to eat it, do your experimenting well before race day (most runners need two

.Great for Long runs with a mix of trail and roadContact AdidasBerghaus Phobic Light, £65 Weight 297gNew to the trail running market, Berghaus has made a nice, lightweight shoe. The hydrophobic upper is open and breathable, and makes a good compromise

or drink, and had notched up a hearty 49 years. But when doctors ran tests, a biopsy revealed throat cancer."Right after the biopsy he went for a run," Dave’s wife Liz, aka forum member School Runner, told RW. "It reminded him that there are loads of people

My Tri ProfileAge.... 25I have been running for... since Feb 2004Strengths... Determination once in an event, and a loathsome view ofquitting. Natural athlete, swam lots as a child, cycled loads all my lifeWeaknesses... A mystery problem resulting