The music video for John Legend 's single Everybody Knows has already been viewed 9,997 times since it was posted on Tuesday, January 20, 2009. The video belongs to the music genre of R&B.
hydration (Noun). the process of providing an adequate amount of water to body tissues. hydration (Noun). the chemical reaction by which a substance (such as cement) combines with water, giving off heat to form a crystalline structure in its setting and hardening.
A hydration pack works by allowing the user to drink water or other liquid without using her hands. They are commonly used by people who spend a lot of time in outdoor activities such as hiking, kayaking, or bicycling.They are also commonly used in the military.Hydration packs are a system for dispensing liquid, built as a waist or back pack, that contains a bladder to hold the liquid, usually made from rubber.Sometimes they are also insulated.hey are also commonly used in the military. Hydration packs are a system for dispensing liquid, built as a waist or back pack, that contains a bladder to hold the liquid, usually made from rubber. Sometimes they are also insulated.