by the way, this is the ONLY time that UV - B rays are strong enough to trigger vitamin D production in your body (truthaboutabs.com)
Further investigation revealed that restricting feeding time to 8 - 12 hours a day, resulted in mice that had less body fat, improved muscle mass, decreased inflammation, increased cardiovascular function, increased mitochondrial function, higher levels of ketone body production, increased cellular repair processes and anti-oxidant production, and increased aerobic endurance. (taliand.com)
This does not preclude an increase in ketone body production during this time; usually these substances do not attain noxious concentrations until after fasting periods longer than 50 hr. (freetheanimal.com)