To set ourselves up to best design for environments related to [[Space Travel at Scale]], we need to understand and clearly define what is called as a Neutral Body Posture. #spaceadaptation ## Neutral Body Posture Having to maintain 1-G postures in microgravity produces stress. This stress is detrimental is a [[Space Health Hazards]] In microgravity, the body assumes a neutral body posture. **a. Foot Angle** Approximately 111 degrees Solution- Sloping restraint surfaces + Leg placement at a postion in between sitting and standing leg posture **b, Height** The height of the crewmember in microgravity is between sitting and standing height. **c. Head Tilt** In microgravity the head is angled forward and down, a position that depresses the line of sight and requires that displays be lowered. **Purpose -** Design and sizing of space modules should ensure accommodation, compatibility, operability, and maintainability by the user population. **Criteria -** It is assumed that the personnel will be in good health, fully adult in physical development, an average age of 40 years, wide range of ethnic and racial backgrounds, male/female.