Some Top Tips are more useful than others, such as a guide on how toprepare yourself mentally for a race using visualization techniques orhow to train hedgehogs to become mobile cheese-and-pineapple cubedispensers at children's parties.This one comes from Concept 2 Australia and, while it's quiteinteresting in itself, it could also prove rather useful to those of youlooking at which area of your training to improve. This is quite similarto the Top Tip we ran a while back about how to predict you 2,000m timefrom a flat out 250m piece, however here it predicts your 2,000m timefrom a 20 minute piece. Judging from our mailbag, while the earlier Tip probably wasn't thesingle most accurate thing we've ever published, this one is actuallybased around some proper research. The advantage of this is that, whenyou have results based on a number of known top performers it can alsobe used to compare your strengths and weakness related to that group.If for instance you have a good aerobic performance that does nottranslate into a good 2,000m race result where strength and anaerobicperformance is also required, it may suggest you need to concentrateyour improvement in another area, and vice versa.Anyway, after all that preamble, the formula is effectively quitesimple, so that for a 20 minute piece, your predicted 2,000m time (inseconds) is 2,232,000 divided by the distance in metres that you'vecovered. Send in your Top Tips to [email protected].