It's the Chakra closest to the earth and represents earthly grounding. Fear is felt in this Chakra and it controls your sense of survival, or your fight or flight response. Physically, it influences the suprarenal glands as well as the legs, feet, kidneys, bladder, and spine. When this chakra is weak, you may feel very tired, overly cautious, afraid of change, needing someone to light a fire under you, and feeling cold from poor circulation. When it is over energized, you may feel aggressive, oversexed, reckless, too impulsive or belligerent.