The 7 Chakras are the spiritual energy centres within the body.
Anahata is the heart chakra, related to the colour green.
It represents our ability to feel love and gratitude.
Here are some great asanas to balance the Anahata chakra:
Supta Baddha konasana
Marjaryasana
Anjaneyasana
Ustrasana
Urdhva Mukha Svanasana
Dhanurasana
Purvottanasana
Urdhva Dhanurasana
Gomukhasana
Parvatasana
Matsyasana
Marichyasana 3
Supta Virasana
Savasana