For the next six to eight weeks -- or until you're free of pain -- avoid the activity that caused the stress fracture. If you exercise again too soon, you could delay the healing process. You could even cause damage that may never heal properly. When you are ready to return to the activity, do it slowly. If you rush back in, you could re-injure yourself. Very severe stress fractures that won't heal on their own may require surgery.
Best Answer: Krypton is a nonmetal belonging to group 8. All the elements in this group are essentially non reactive and are called the noble gases.est Answer: Krypton is a nonmetal belonging to group 8. All the elements in this group are essentially non reactive and are called the noble gases.
Krypton was one of three noble gases discovered in 1898 by Scottish chemist and physicist Sir William Ramsay (1852-1916) and English chemist Morris William Travers (1872-1961). Ramsay and Travers discovered the gases by allowing liquid air to evaporate. As it did so, each of the gases that make up normal air boiled off, one at a time.