My 14 year old son loves his field sports but he's getting really down about his lack of speed over short distances. He's not overweight, has good hand-eye coordination and much longer legs than me. Unfortunately, he can't seem to move them faster than a slowish lope... he appears to want to run faster, but isn't sure how. This has been a long term problem for him and he's starting to feel relatively inadequate when compared to other kids - so far he's been relying on some good specific skills but he realises he could do so much more if he could just learn to sprint and make a better contribution to his team's performances. I think he has some kind of mental block about it - like his body just doesn't know how to flip into the anaerobic zone. His aerobic levels seem OK - he can run for 5+ miles at a jog pace and seems to have reasonable core strength/fitness. Anyone come across this problem before and have a way ahead for him? Advice much appreciated.