In SPH 4U1, (Ontario Grade 12 Physics) we learn the attempts to stop the affects that the human body experiences when in prolonged periods of time in space; such as muscle decay, loss of bone density, etc. So we learn of the attempts to use centripetal force and angular motion to cause a 9.8 m/s acceleration towards the center of the ideal circular space ship. This is easily dictated through the equation of a=v^2/r I wonder, if explained though terms of General Relativity, that if gravity is truely the curving of space-time. If this is true, would that not mean that our bodies are not developed to experience a maintained 9.8 m/s pull towards the center of the earth, that we're actually build to exists in the curved space-time that earth produces for us. I propose that the circular space ships and use of centripetal force would not stop the decay of muscle or loss of bone density. That in fact, the human body needs curved space-time to function, not simply an outside force. Obviously I can't prove this, but it has always been something that has made me wonder since we were proposed the idea of centripetal force in space earlier in the semester. What if the dysfunctionality is actually our bodies straightening out?