Network Layer is the Layer 3 of the OSI Model. One of Layer 3 s functions is internetworking which involve logical addressing or Internet Protocol Addressing. Ping differs with ICMP as ping or Packet Internet Groper is a utility (Application, Layer 7) used for testing connectivity between internetworked devices.
Caffeine is a stimulant, and studies show it can boost metabolism a bitâalthough at the price of insomnia if you overdo it (up to four 8-ounce cups of coffee a day, roughly 340 milligrams of caffeine, is generally the upper limit).
You can also try to slow your heart rate via breathing and relaxation techniques, by practicing other mind/body therapies such as biofeedback, or by taking supplemental calcium and magnesium. For women, start with 100 mg of magnesium (citrate, glycinate, or chelate) and increase the dose up to 350 mg daily.