Vagal maneuvers are used to try to slow an episode of fast heart rate. These simple maneuvers stimulate the vagus nerve, sometimes resulting in slowed conduction of electrical impulses through the atrioventricular (AV) node of the heart. Be sure to talk to your doctor before trying these. Vagal maneuvers that you can try to slow your fast heart rate include: Gagging. Holding your breath and bearing down (Valsalva maneuver). Immersing your face in ice-cold water (diving reflex).
Some examples of renewable energy sources are solar energy, wind energy, hydropower, geothermal energy, and biomass energy. These types of energy sources are different from fossil fuels, such as coal, oil, and natural gas.
Oil is the leading source of global energy consumption. The world consumed over 181 quadrillion BTUs of energy in 2012, which is about 35% of the total global energy consumption. Natural Gas. Natural gas is one of the fastest growing sources of non-renewable energy. In 2012, the world consumed 123 quadrillion BTUs of natural gas, which means that natural gas makes up one quarter of total global energy consumption. That number is expected to rise since natural gas is projected to become the main source of energy in the United States over the next 50 years.