diff --git a/sleep/chrono_jetlag.adoc b/sleep/chrono_jetlag.adoc
index 0cb7476..bfc2b74 100644
--- a/sleep/chrono_jetlag.adoc
+++ b/sleep/chrono_jetlag.adoc
@@ -68,20 +68,29 @@ image::chrono_weekdays.png[]
 
 [[regularity]]
 
-== Sleep Regularity
-Sleep regularity is a key to healthy sleep - ideally you go to sleep at the same time every day and sleep for the same period of time. You can read about https://www.sciencedirect.com/science/article/abs/pii/S2352721823001687[how sleep regularity affects the speed of your aging].
+[[sri]]
 
-The regularity shown is the https://en.wikipedia.org/wiki/Variance[variance] of your mid sleep hour and as Sleep regularity index.
+== Sleep Regularity Index
+Sleep regularity is a key to healthy sleep - ideally you go to sleep at the same time every day and sleep for the same period of time. You can read about https://www.sciencedirect.com/science/article/abs/pii/S2352721823001687[how sleep regularity affects the speed of your aging].
 
 Sleep as Android tracks your sleep regularity and shows you in <</sleep/charts#,Charts>> how regular your sleep is.
 
-[[sri]]
-
-=== Sleep Regularity Index
-https://sleep.urbandroid.org/sleep-regularity-index/[SRI] is a metric calculated as the probability of an individual being in the same state (asleep or awake) at any two time points 24 hours apart (range 0–100, with 100 being perfectly regular).
+https://sleep.urbandroid.org/sleep-regularity-index/[Sleep Regularity Index, SRI] is a metric calculated as the probability of an individual being in the same state (asleep or awake) at any two time points 24 hours apart (range 0–100, with 100 being perfectly regular).
 
 It is accounting for awakes, naps, and works well even for polyphasic sleep patterns.
 
 This index can be used for monitoring your risk of health issues - read about the link  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10153326/[between SRI and mortality], the link https://www.nature.com/articles/s41598-017-03171-4[between SRI and academic performance].
 
 You can also read how https://academic.oup.com/sleep/article/44/10/zsab103/6232042[SRI compares to other sleep metrics].
+
+=== Sleep Regularity
+
+
+The regularity shown is the https://en.wikipedia.org/wiki/Variance[variance] of your mid sleep hour and as Sleep regularity index.
+
+Sleep regularity is shown on the <</sleep/sleepscore#, Sleep Score>> (the buttom value), and it is also used in <</sleep/advice#, Advice section>>.
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