I've averaged about 12-25km per week for the past 3 years, and have been doing about 34km in the past month. My sleep is not "better" just cause I exercise. I

I've averaged about 12-25km per week for the past 3 years, and have been doing about 34km in the past month. My sleep is not "better" just cause I exercise. I sleep like normal. I go in spurts of 6 hours of sleep when I'm under stress from like work or life and I never feel rested. I often have 30 minute uncontroable powernaps that I have to entertain once or twice a day. If not I do that head bobbing thing. When I get at least 7:30-8 hours of sleep I don't have that issue. I can function on 6 but I don't feel better at 6. So take this study with a grain of salt. Your probably alert because you have other issues your brain is concerned about as opposed to actually being relaxed. I can function on 4 hours of sleep too. Running a 10k though isn't going to make the day any easier and offset be having another 4 hours of sleep for the day. Exercise isn't some sort of panacea for poor sleep. It's much more likely tied to the fact that people who exercise live regimented lifestyles so their circadian rhythm is more in tune with the time of day than the amount of sleep. Edit: k to km/week