Lately I've been interested in what I think of as Neurocentric exercise programs that are principally taxing on Balance, Coordination, Movement Patterns, Neurological Tone and and End Range Motor Control like Dr. Andreo Spina's FRC/Kinstretch, Erwann Lecorre's Movnat, Tom Bisio's Daily dozen adopted from the Internal Martial Arts.
Rather than build endurance, muscle size, or power these programs train areas that we often think of as being "hardwired" into our system like balance, coordination, fine motor skills. (These areas are as hardwired as the size of our biceps - yes we have genetic proclivities but anyone who trains the bicep for size will get some improvement). These programs are challenges to the declarations we often say to ourselves about our capacity that usually sound like "I am just clumsy" or "I have two left feet" or "My muscles are just really really tight" (No one who wants to get strong says "I tried lifting weights but I am just weak so I gave up").
While all of these programs can generate a sweat, fatigue, and soreness, they are mostly targeting your brain (central nervous system). My experience with these types of exercise is that I sleep really well when I train my brain.
This makes sense if we understand that sleep is a process and part of that process is what we call the Synaptic Homeostasis Hypothesis which is essentially the idea that neural networks are built during sleep in response to novel input. This means that when we learn a new skill (ie challenge our system) like a language, or a new sport like surfing or a new challenge to an already acquired skill like left handed golf or a new dance sequence our brain needs time to 'build' (or rebuild) the neural networks that 'store' that newly acquired skill. The reason why we get better at the things we practice is a combination of the time put into practice and the refractory period in which our nervous system adapts to that practice and we call that sleep.
So it appears to make sense that on nights in which I have spent time doing CARs, 90/90, Post Standing or Circle Walking I sleep like a baby - these are exercises that challenge my neurological set points of mobility, balance, coordination and perception and in so doing require a neurological overhaul that nature has decided most effectively takes place during sleep.