Sep 24, 2008
Proper starting form is lying face up on the floor with knees bent. The movement begins by curling the shoulders towards the pelvis, with hands placed behind or beside the neck, or crossed over the chest. Using the hands to exert force on the neck can cause injury, so common practice is to avoid placing the hands behind the head itself.
The hands can however, form a shelf to support the weight of the head, so that the neck flexor muscles can relax during the movement. So long as the neck remains in an extended position with the neck flexors relaxed, then the hands are not exerting excessive force and it will not cause injury.
Sep 23, 2008
Serious health risks can be produced by long-term use or excessive doses of anabolic steroids. These effects include harmful changes in cholesterol levels (increased low-density lipoprotein and decreased high-density lipoprotein), acne, high blood pressure, liver damage, and dangerous changes in the structure of the left ventricle of the heart.
Labels: anabolic steroids
Sep 22, 2008
Sep 17, 2008
Sep 11, 2008
Sep 6, 2008
The National Sleep Foundation in the United States maintains that eight to nine hours of sleep for adult humans is optimal and that sufficient sleep benefits alertness, memory and problem solving, and overall health, as well as reducing the risk of accidents.
A widely publicized 2003 study performed at the University of Pennsylvania School of Medicine demonstrated that cognitive performance declines with fewer than eight hours of sleep.