^ As per title.

Although it wasn't known as WBTB at this point, in ETWOLD Laberge advocated staying awake for up to 1-2 hours 1 hour before you would usually get up in the morning. Now a WBTB is more modestly considered anything from 2-90 minutes long.

Sensei had great success fairly early in his LDing career by having many "micro"-awakenings during the night. Also, waking after each REM period is associated with greater recall, possibility of DEILD etc.

I had always found that lucidity correlates with length of WBTB period. But the last couple of nights I've been having "micro" WBTBs (auto-shutoff alarm, roll over, MILD) with greatly increased recall and lucidity.

So, what do you guys find more effective? One long period of wakefulness mid-sleep, or many short interruptions?