From working out too hard in a spin class?

就因为单车课上用力过猛了？

The iron atoms each behave as tiny magnets but, whereas in a normal lump of magnetised metal their north-south poles all point in the same direction, in a spin glass they do not.

每个铁原子的行为都像微小的磁铁，但在正常的磁化金属块中，它们的南北极都指向相同的方向，而在自旋玻璃中却不是这样。

If your head's in a spin because you've had a bad night's sleep, or you're hungover, or maybe you've just got too much to do, the chances are you're not in the best of moods.

如果你的头晕是因为你晚上睡得不好，或者你宿醉了， 或者你有太多事情要做，那么很可能你心情不好。

And I'm sure you know the feeling: you go for a spinning class in the morning, and then by the time you eat breakfast you're so hungry you maybe double the size of the portion of oatmeal you normally eat.

你在早上去上一堂飞轮课，然后到吃早餐的时候，你饿到可能会把正常吃的燕麦片量加倍。