If, for example, we pass from a period of increasing population into one of declining population, the characteristic phase of the cycle will be lengthened.

例如，如果我们从人口增长时期过渡到人口下降时期， 则周期的特征阶段将会延长。

Stacy Sims, a researcher at Auckland University of Technology, in New Zealand, recommends athletes increase intensity in the low-hormone follicular phase of the cycle, when the body is primed to bear heavy loads.

新西兰奥克兰理工大学的研究员斯泰西·西姆斯建议运动员在周期的低激素卵泡阶段增加强度，此时身体已经准备好承受沉重的负荷。