the chakras, nadis and meridians are very important to reiki, yoga and acupuncture among others.
Both the nadis and meridians work with the "Chi" energy.
Reiki is responsible for restoring both the functioning of the chakras, nadis and meridians. Reiki and yoga are good ways to cleanse and filter out the meridians and chakras.
In terms of yoga, this can be achieved by putting into practice some of the following techniques:
Pranayama (breathing techniques);
Samanu (purification of the nadis);
Asanas (exercises to correct body postures);
Meditation with Mudras and Bandhas (hand positions and body postures)