Week 6 is the sixth active Sleepgenic Weekly Report, and it closes the strain cycle that began in Week 3. The sequence is worth restating because Week 6 is its resolution: Week 3 showed stable scores over a thinning architecture (latent strain), Week 4 showed that thinning break through into the scores while REM collapsed to 0.17 hours (strain surfacing), and Week 5 showed a partial recovery that lifted REM to 0.62 hours without returning it to baseline (partial reversal). The open question entering Week 6 was whether REM would complete its return or settle into a suppressed equilibrium below baseline.
Week 6 completed the return.
Average REM sleep was 1.00 hours, up from Week 5's 0.62 and above the Week 0 baseline median of 0.81 hours. This is the first time REM has been above baseline since Week 2, and it settles the trajectory question definitively in the encouraging direction. The Week 4 report framed the test plainly: if REM returned toward the 1.0-hour range, the collapse would read as the trough of a recoverable strain cycle; if it stayed suppressed, the interpretation would shift to something more persistent. REM reached exactly that 1.0-hour mark. The collapse was a strain response, and the strain has resolved. REM was at or above 1.2 hours on four of the seven nights, including 1.53 hours on May 31 and 1.45 hours on May 30 — the strongest consecutive REM nights of the entire run.
One precision note belongs here. REM has recovered to above baseline this week, but the seven-week running average remains slightly below baseline at 0.76 hours, because the Week 4 collapse was deep enough to still weigh on the cumulative figure. The accurate statement is that REM is currently recovered, not that the run as a whole has erased the Week 4 deficit. The recent trend and the long-run average are telling slightly different stories, and both are true.
At the score layer, Week 6 confirmed the recovery across the board. The average Overall Score was 71.3, up from Week 5's 64.3 and above the 67.5 baseline. Duration Score reached 83.9 — the highest weekly Duration Score of the run by a wide margin — reflecting consistently long nights, with total sleep averaging 7.16 hours, also the highest of the run. Quality Score rose to 72.3. Recovery Score was 69.7, the one score-layer metric that lagged slightly, held back by a single weak night rather than broad weakness.
That weak night was June 2, a Recovery day, which scored 48 overall with REM of just 0.17 hours and a "Negative Short And Poor Quality" tag. It is worth naming because it is the exception that clarifies the week: in a week where REM recovered strongly and most nights scored in the 70s and 80s, the one failure night landed on a Recovery day, not the high-load Summit day. This matters for a hypothesis the previous report raised.
The Week 5 report flagged the Summit night as a concentrating strain point. Across Weeks 2 through 5, the night following the Summit had scored 78, 73, 43, and 38 — an apparent decline that suggested the body was specifically failing to absorb its highest-load day. The Week 5 report named this "concentrating high-load strain" and set the Summit night as the Week 6 watch item.
Week 6 overturned that reading. The Summit night on May 31 scored 83 — the highest score of the week, with REM of 1.53 hours and a "Positive Long And Deep" tag. The apparent Summit-night decline was not a load-specific signal. It was an artifact of the strain period: during Weeks 4 and 5, nearly every night was depressed, and the Summit night was depressed along with them. It was not the Summit load that the body was failing to absorb — it was a general strain state that happened to include the Summit night. Once the body recovered, the Summit night recovered fully, and in Week 6 it was among the best nights of the week. The high-load-strain hypothesis does not survive a recovered week, and Sleepgenic retires it.
This is worth stating plainly rather than quietly dropping, because longitudinal interpretation only earns trust if it corrects itself when the data overturns a prior reading. The Week 5 reading was reasonable given five weeks of data. It was also wrong, and Week 6 is what revealed it. The discipline that protects the methodology is the same one that produced the error: reading patterns early. The correction is to hold single-period patterns loosely until a contrasting period tests them — which is exactly what Week 6 did.
The physiological layer was stable with one quiet exception. Resting heart rate averaged 63.9 bpm, slightly elevated versus Week 5's 61.6 but unremarkable. The exception was HRV, which averaged 33.7 ms — the lowest weekly HRV of the run, recorded during the strongest score week. This is a genuine divergence: the composite scores and REM say Week 6 was the best week to date, while HRV alone says the autonomic state was not at its peak. Set against the baseline, however, the divergence is mild — the seven-week running HRV remains above baseline at 38.4 ms, so Week 6's reading is a single-week dip inside an above-baseline trend rather than a meaningful decline. It is noted as a thread to watch, not a warning.
The interpretation is that Week 6 is a completed reversal. The strain cycle that began with latent strain in Week 3 and bottomed at REM collapse in Week 4 has now closed. REM returned above baseline, the scores recovered above baseline, sleep duration reached its run-high, and the body absorbed its full training calendar — including the Summit day — without the strain signature that defined the middle of the run. The one weak night fell on a Recovery day, and the one soft metric (HRV) sits comfortably above baseline on the running average.
Sleepgenic classifies Week 6 as completed reversal. The Week 4 trajectory question is fully answered: the REM collapse was a recoverable strain response, and the recovery is now confirmed at and above baseline. Across six weeks, the longitudinal picture is a complete strain-and-recovery cycle — pressure, conversion, latent strain, surfacing, partial reversal, and now completion — with the body's foundation holding throughout and the composite scores tracking the cycle.
The watch item for Week 7 is whether the recovery converts into a sustained higher state or simply holds at baseline. Week 6 returned the body to its baseline and slightly above. The question is whether the next week consolidates that into a stable above-baseline floor — the adaptation-conversion pattern seen after Week 1 — or whether Week 6 was a single strong week that regresses toward the mean. The HRV divergence is the specific thread to follow: if HRV rises back toward its own recent levels while scores hold, the recovery is complete and consolidated. If scores stay high while HRV keeps drifting down, the divergence becomes the more interesting signal than the recovery itself.