The root chakra or in Sanskrit is called the Muladhara, meaning root and base.
The root chakra is the first of the 'Physical' Chakras. Its Prime function is for grounding and security.
Its the primal instinct of the chakras. Sexuality, flight or fight response. Physically its connected to the adrenal glands which are close to the kidneys.
Astrologically its controlling planet is Saturn
Gemstones that help boost its potency or amplify it are Hematite and Bloodstone.
Some imbalances that may arise or that may be experienced can be anxiety, fears, nightmares. Problems with the colon or bladder, sometimes legs or feet.