Additional approaches include using behavioral modification techniques, such as physical exercise and exposure to an enriching environment, that are known to stimulate proliferation of stem cells.

其他的方法还包括已有的行为修饰技术刺激干细胞的增值，例如物理练习和环境暴露。

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The main factors influencing their sports behavior is the lack of physical exercise knowledge, time and management as well as the bad living habit and particular environment.

影响研究生体育行为的主要因素是：健身知识、时间、组织管理的缺乏以及研究生特定的环境和不良的生活习惯等。

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Significantly increased hippocampal LTP activity was only recorded in the enriched-environment mice, possibly because exploring novel objects provided both physical exercise and cognitive stimulation, researchers said.

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