We have seven Chakras , we can activate it by way of doing meditation or by way of concentrating on each chakras , By activating different chakras we will get different results .
As soon as we activate even one chakras we will see amazing result .It also called kundalini awakening. By awakening all chakras it is said that a person become complete Yogi , nothing is impossible for him or her

7 PRIMARY CHAKRAS & ENDOCRINE SYSTEM (GLANDS)
Head Centre. . . Pineal Gland
Centre between eyebrows. . . Pituitary Body
Throat Centre. . . Thyroid Gland
Heart Centre. . . Thymus Gland
Solar Plexus Centre. . . Pancreas
Sacral Centre. . . The Gonads called
Centre at the base of the spine. . . Adrenal Glands