>> great time to get organized. great time to clean out your e-mail box, to plan your meals for the week. to clean out the closet. just to spend some time on those focused tasks that don't force you to think and get you into better shape for the next day. >> could that also be from 6:00 to 8:00 for a lot of us getting off at the end of the daf, is that a good time for exercise? >> it's a great time to exercise. you don't want to do something really getting your adrenaline going, but it's a great time from my perspective for focused exercise like yoga or something to build strength and do core exercise building, but not really get you kind of overcharged. >> then from 8:00 to 10:00 is the best time for relaxing with 10:00 p.m. on ward best for snoozing. sleep is one of the best things you can do for your brain. >> this was fun. dr. cynthia greene. >> thank you for having me. >> absolutely. thinking of skipping work to get holiday shopping done? you shouldn't do it. or maybe you just need a mental