Exercise ball standard exercises, such as a push-up, on an unstable surface can be used to increase activation of core trunk stabilizers and in turn provide increased trunk strength and greater resistance to injury. Fitness Experts and some doctors also recommend sitting on an exercise ball instead of an office chair. That is based on the theory that the abdominal and back muscles are constantly engaged and active to maintain proper posture and balance on the ball. There is no scientific evidence of those benefits occurring by just sitting without additional exercises. However, some people warn against using a Swiss ball as
Flash-ball Flash-ball Flash-Ball is a registered trademark for a nominally non-lethal hand-held weapon used mainly by law enforcement officers in riot situations as an alternative to lethal firearms, baton rounds, and plastic bullets. It was developed by French hunting firearms manufacturer Verney-Carron. The weapon exists in two versions of caliber 44/83. The super-pro version features vertically stacked barrels and is made from metal alloys, while the compact version is made from lighter composite materials with the twin barrels side by side. Both versions of the weapon can be used to fire a variety of ammunition although a soft 44 mm rubber