"Every time you run, walk, or stand in your running shoes the foam in the sole compresses. That foam can take from 24 to 36 hours to fully decompress. Letting the foam full decompress between uses will prolong the useful life of your shoes. When you use your shoes day after day and never give the foam a chance to decompress, the foam will break down at a faster-than-normal rate."
http://www.amateurendurance.com/running/running-equipment/should-you-rotate-your-running-shoes/
这就是我最初的观点，也是我对SHINE的建议。试验结果符合这个观点