Before setting your sights on a marathon, hop on to the scales.
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WeyandP. G., DavisJ. A. The Journal of Experimental Biology, 208. 2625 - 2631 (2005).
HutchinsonJ. R. & GarciaM. Nature, 208. 1018 - 1021 (2002).
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Simonite, T. Study lends weight to racing equations. Nature (2005). https://doi.org/10.1038/news050711-14