I find this timing business fascinating, and it connects with several things for me. I used to start most mornings (like Inester 7 I have read Nancy Klimas and Connie Sol on this HR thing, though I find using the thing a bit irritating, and I am not so strict) by taking a short walk alongside the beach very close to where I live. I used to walk maybe 10mins, rest on a bench for 5-10, then return more slowly, often experiencing some warning symptoms on the return, and being moderately wiped out for the rest of the morning--if I tried to do anything, I usually triggered PEM. Now I usually walk barefoot on the sand, and when I feel those first internal signals that say "far enough" I sit on the beach--feet at same height as hips--and lean my back against a log. I sit there for maybe 15 m,my mind pretty relaxed, then return a bit slowly, and most mornings after a short rest I can do some things, though as before any excess activity will trigger trouble. This was started long before I read what Kimsie recommends, but it is fairly close, and it seems to work--I get some pleasurable mild exercise without ruining my day. If my RHR is above 72 or so upon waking I stay put.
I am also very interested in how Low Level Light Therapy may help us, and timing plays a role there too. Lew Lim, CEO of Vielight, makers of several LED devices, has settled on a Pulsing rate of 10 Hz for his latest, the 810 intranasal and the Neuro, which is based on a more powerful version of the 810 plus 4 transcranial capsules, all synchronized to 10 HZ, and at a Duty Cycle of 50%, which means they are actually emitting photons for about 50% of the time. The advantages of Pulsing (as compared with Continuous Wave) are that it penetrates deeper, reduces the risk of heating tissue--and maybe, though he has not articulated this--gives a bit of time for those antioxidants to mop up some of the ROS that are a side effect of the increase in ATP that is the best documented immediate effect of Red and Near InfraRed light in the range of approx. 630-900nm. There is a German LED unit called the Repuls that uses a Pulse of 2.5Hz, with the articulated aim of helping clear those ROS (it is becoming clear that there are other signaling messages going on triggered by this light energy).
There are as yet no published reports on using LLLT for ME, but there are a couple of short papers using it on a mouse model of MS, which seems to share a good many pathways with us, though of course not all. These recorded benefit during a one week series of sessions, but that a week's pause was needed before another week proved beneficial. I would guess that mice live on a timescale considerably quicker than we large mammals, though I have no idea what the ratio might be. It apppears that timing, duration and frequency are all equally important in trying to make this stuff helpful for us. I would suspect that there are several timescales that are relevant here--Kimsie points to 15minutes and two weeks as important--I wonder if there are not more at play? I do wish Kimsie had added a few references--I would love to learn more about this timing business. Does anyone have any published references to the time frames that Kimsie uses?