Effect of spaceflight on the human body of muscle fibre prominent in muscles also change. Slow twitch endurance fibres used to maintain posture are replaced by fast twitch rapidly contracting fibres that are insufficient for any heavy labour. Advances in research on exercise, hormone supplements and medication may help maintain muscle and body mass. Bone metabolism also changes. Normally, bone is laid down in the direction of mechanical stress. However, in a microgravity environment there is very little mechanical stress. This results in a loss of bone tissue approximately 1.5% per month especially from the lower vertebrae, hip and femur. Due to microgravity and the decreased load
The Singing Bone The Singing Bone "The Singing Bone" ("Der singende Knochen") is a German fairy tale, collected by the Brothers Grimm, tale number 28. It is Aarne-Thompson type 780. A boar lays waste to a country, and two brothers set out to kill it, with the prize being given the princess's hand in marriage. The younger meets a dwarf who gives him a spear, and with it, he kills the boar. Carrying the body off, the man meets his older brother, who had joined with others to drink until he felt brave. The older brother lures him in, gives him drink, and