Root Chakra Symbol

What are the functions of the Root Chakra?
This root chakra governs your primal instincts and your survival mechanisms. These include you basic human needs such as water, food, sleep, procreation, and shelter. Past life memories are said to be stored here too, and it’s where your energy sleeps.
When everything’s balanced, you’ll enjoy good health and have ample energy to get through the day. You’ll feel content with your life and have plans to make things happen because you have direction and purpose.
Being the base chakra, many people believe that it correlates to the etheric layer of the subtle body. Ether is a state of existence between matter and energy. This seems fitting because the root chakra is where the spark of life happens. Also, where ideas start to form and become manifest.
We talk about getting to the root of the problem, of laying foundations for plans and ideas, of creating stability out of chaos. Empowered language such of this comes out of the place where the etheric layer of the subtle body meets the physical body.
This chakra is where thoughts become reality. Imbalances here also have a tendency to manifest themselves physically; how many times have you talked about something being a pain in your butt?!
Where is the Root Chakra?
The root chakra is found at the bottom end of your spine, right at your tailbone. It’s the base of all the other chakras and is the most physical of all.
What Colors represent the Root Chakra?
This chakra resonates with red, the color of blood and the life force.
Red or black stones, even meditating and flooding your aura with red, will help to bring your root chakra back into alignment. Red is very stimulating and a little goes a long way.
Symptoms of an Overactive Root
It’s usually fairly easy to tell if the root chakra is overstimulated. You’ll feel tired and dissatisfied with your life and your health and wellbeing suffer.  Anger and frustration are not uncommon, and your sexual appetite may be over-hungry. No matter what you try, there seems to be little foundation in your life, no base for security or stability.
Shades of red will enable this chakra to either decrease or increase its energy. Even if this area needs stimulating, you’ll have to relax first! This chakra is associated with the foundation of things.
Using Snowflake Obsidian and Onyx will help you to restore peace and harmony to an overactive root chakra. 
Symptoms of an Underactive Root
Lethargy and apathy are two signs that this area needs a tuneup. You don’t seem to care about anyone or anything. You’ve no interest in making something of your life, you only coast along, day after day, going where the hours take you.
You feel small and insignificant and you have no desire to push yourself to get what you want. To restore balance, you have to start motivating yourself. You’ll struggle to find the drive to do this, but it’s just sleeping.
If your doctor is alright with it, add exercise to your daily routine. Get your metabolism tuned up and be more active. This is one of those situations where usually the more you do the more you’ll want to do. The hardest step is the first one.
Red and black colors will help to stimulate you into action, but you have to do more than surround yourself with them. You have to let them guide you forward into actually doing something to change the things in your life that you don’t like.
Work with Red Jasper and Hematite to stimulate your root chakra.