Interestingly, these neurons become so starved for stimulation, they become hypersensitive and start firing inappropriately, causing increased muscle tone and muscle spasms, so we call this spastic paralysis.

有趣的是，这些神经元变得非常" 渴望" 刺激，它们会变得极度敏感，并开始不恰当地发放冲动，引起肌肉张力增加和肌肉痉挛，所以称之为痉挛性瘫痪（硬瘫）。

STEP 4 Do strength training to keep your body injury free. Increasing muscle tone in all areas of your body helps you on longer run days and gives you greater power.

进行力量训练，避免身体受伤。增强身体各部位的肌肉可以帮你跑得更远，让你更有力量。