help you to overcome the fatigue that's inevitable if you're pushing the pace. This is a hot topic in the scientific community at the moment. "In general physiology dictates maximum sustainable pace, but there is much debate regarding the causes

-tuning speed with rest. The strategy works because if you sustain a high training volume for too long, you'll fatigue. But if you reduce volume for an extended period of time, your fitness will begin to erode. Thus, to continuously race well, you must return

performances will suffer. When you race all-out too often, your body secretes less cortisol, a hormone that aids recovery, and it slowly becomes immune to the hormone's effects. The result is constant fatigue and a depressed immune system. A good rule of thumb

constricted, my arms went all noodley, and a paralysing fatigue overtook me. It was nothing less than slow-motion agony. My confidence evaporated, and a downward spiral of negative thoughts engulfed me. I was wallowing in dread at the many miles I had left

Heavy legs? Breathless? Can't keep up with your training partners? If you've put any recurring lethargy down to too much training and have carried on regardless, hoping that the fatigue will eventually, magically disappear, you could be in for a

revolutions per minute, but you won't make as much progress as you would if you dropped into a lower gear and ramped up to 75 or even 85 rpm. An easier spin is more sustainable and won't leave your legs as fatigued. Back it down to 10The ideal climbing

the lower slopes and you become excited," he says. "If you suddenly turn into the wind, you may feel faster by pushing a bigger gear, but your muscles will fatigue more quickly and you'll end up going slower. To stay efficient, use a smaller gear." And keep

-road terrain is that you are running on an uneven surface, so you need to prepare your body for that," says Barden. "If you were to do all of your training on the road, you might initially feel OK in a cross-country race, but your body will fatigue a lot

of carbohydrates (glycogen). Nearing empty signals your body to stock even more glycogen, so you have more fuel to draw on in the future. "Long runs also develop your ability to transport and use oxygen, which allows you to run longer without fatigue," says Billat

-striking on locked knees, incurring braking forces."Quick Step "Your perfect footstrike should be as close as possible to your centre of gravity," says Phillips.  "Leaning forwards slightly makes this easier."Short and sweetOverly long strides are linked to fatigue