During adaptation, most polyphasic schedules (other than non-reducing ones) are strict, that is, they must be done very consistently, without missed sleeps, moved sleeps, oversleeps, or undersleeps. If your life schedule cannot accomodate the sleep schedule you are planning for almost all days, it is unlikely that you will ever be able to adapt to it. One or two minor mishaps should not cause too much damage to your adaptation. However, as the mistakes accumulate, your chance of successful adaptation decreases. It is therefore necessary to plan ahead and avoid these mistakes, by carefully scheduling your life around the sleeps as well as setting proper alarms to avoid oversleeps.
在适应过程中，大多数多相时程（非缩减性时程除外）都是严谨的，也就是说，睡眠时程必须非常稳定，不能有跳过睡眠、移动睡眠时间、睡眠不足或睡过头的情况。如果你的生活安排使你不可能每天都遵循所计划的睡眠时程，那么你将无法适应它。但是一两次小的失误应该不会对你的适应造成太大损害。然而，随着错误的积累，你就越不可能适应。因此，有必要未雨绸缪，避免这些错误。根据睡眠时程仔细安排你的生活，以及设置适当的闹钟，避免睡过头。
