Vacuum-packaging, or modified atmosphere packaging (MAP), O was utilized as a food preservation technique in ancient Mesopotamia
was introduced at Walt Disney World in 1962
does not stop the growth of bacteria
O is the surest way to prevent the growth of all bacteria

this is true my friend.        

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.