Too much sleep is almost as bad for you as too little sleep. The body has several internal clocks which are easily programmed to the routine of the individual. If you routinely arise at 0530 during the week, your body is programmed to awaken at that time. Sleeping in to 0630 or 0700 may not pose a problem, but sleeping longer than that may make you more tired than refreshed. Bottom line, get 6-8 hours of sleep daily and keep bedtime and arising time as consistent as possible.
Breakfast is the meal that primes the body for the day ahead.
We have known for sometime that people who eat breakfast on a regular basis are healthier than their counterparts who do not. The assumption has been that these individuals also engage in other wellness activities and that's why they are healthier. That may be part of the explanation, but it doesn't fully explain the breakfast phenomenon. A recent study which looked at the effect that eating breakfast has on the body found that eating breakfast lowers blood pressure and make platelets less sticky. These are two very important physiologic processes in preventing the build up of plaque in the arteries.