Normal human being on earth must perform these activities, although only 1 hour per day. A long time ago people sleeping pillow wearing wood or stone or even not wearing a pillow. Now aja good, the beds were soft-soft wear.
The habit of sleeping with a pillow of wood or stone, causing the first to wake up with a good shape, because their bodies can rest completely during sleep. different from those who sleep on a soft bed, their bodies can not break the total, because each pressed by his bed.
Correct sleeping position is the body tilted to the right with the upper leg bent, and the left hand as a pillow. This position will be sleeping with the blood flow to the brain perfectly, because the head lower than the heart.
Sleeping position makes stupid is: supine, prone, and legs astride. This position is described as his way of animals, because the blood flow is not smooth, abdomen and chest distress, as well as blood flow to the brain is also inhibited.
When is a good sleep at 20:00 pm - 1:00 Morning. Furthermore, 1 a.m. to 4:00 is used to study, at 4:00 to 6:00 for the sport, and so on ...
When sleep is not good is 06:30 pm after sunrise, at midday at 11:30 to 12:00 pm and 17:30 pm at sunset. Sleeping at that time will result in one half dazed and lost consciousness, due to the balance of nature that at times it must be in a conscious state.
A good sleep in a state or a dark space, protected from light and glare stinging. Light stimuli were too much, causing the brain is not optimal in defragmenting the data recorded before bed, this will affect the memory in the long term.