It was over 20 years ago in college when I learned I had this ability. I was overloading classes in support of a double major and had far more work than I coul

It was over 20 years ago in college when I learned I had this ability. I was overloading classes in support of a double major and had far more work than I could handle. I eventually realized I could wake myself on demand within 10 minutes of a given time when I'd set an alarm to wake up at 3:30am. I kept waking up before the alarm. Later in life, I did the same to wake myself up for work, and kept waking within a few minutes of my alarm going off. I eventually stopped setting an alarm and haven't used one for at least 15 years, even when traveling, having to get up an an unusual hour, or not having a consistent bedtime. Even now, I fall sleep anywhere between 9:30pm and 1am, but wake up just before 6am on the three days a week I go to the office. This works just as well in the summer as it does in the winter. Other days I generally just sleep until I wake, which is usually 7:00 to 8:15am or so.