Mice will run spontaneously on running wheels, but these mice got the health club treatment: 28 d of 2-30 min sessions on a 6 lane treadmill, 5 d/week (weekends off apparently).

• 他们采用踏车实验，实验中的小鼠会自发地在运转的车轮上跑动。但是这些老鼠事先要经过“健康俱乐部”方案（在6个车道的踏车上跑2-30分钟，持续28天，每周5天（周末除外））的处理。