Muscle relaxation at rest
Involuntary muscle contraction↓
Also searched as Muscle cramps · Involuntary muscle contraction.
Cramps interrupt sleep more reliably than almost anything else, which is why they belong to rest as much as to muscle.
In depth
Involuntary, painful muscle contractions — commonly nocturnal, commonly in the calf.
What it drives
It reduces Sleep.
In a large community sample, more frequent nocturnal leg cramps were associated with difficulty falling asleep, difficulty staying asleep, non-restorative sleep, daytime sleepiness, sleep-medication use and shorter sleep duration, with the authors concluding cramps may both mark and contribute to disturbed sleep. doi 10.1371/journal.pone.0178465 · PMID 28586374
Blends that modulate it
Each blend page names this pathway and carries the study behind its claim.
See it on the map
Open the causal map to follow this pathway upstream and downstream, arrow by arrow, each with its study.