Anahata meaning unstruck sound, it can also translate as "pure" or "unhurt"

the home of unconditional love. When out of balance, it can also be associated with fear and even hatred. When this chakra is aligned and feeling good, you find that you feel open, loved, and loving, and that unconditional love flows easily through you.

When the energy in this chakra is not balanced, you can feel scared, fearful, hurt, and perhaps even hateful. It's often said that the opposite of love is fear, so an imbalance can manifest as a tight, fearful feeling in your chest.