I like how easy you've made it to participate! How strict is the timing where you say that we have to wake up after 4-5 hours to do SSILD? When I did the experiment a couple days ago I used an alarm clock so that I could get within the 4-5 hour range pretty nicely but it woke me up too much to do SSILD. Is it okay if I do the SSILD after 3 or 6 hours of sleeping?