Kundalini is raised in usually three methods.
1) Pranayama - using control of your breathing
2) Transcendental - using visualization techniques
3) Mantra - using sounds
There is a fourth method discovered by Sri Vethathiri Maharishi.
With a gentle touch of the guru your kundalini is raised from the mooladhara chakra to ajna chakra.
Krish Murali Eswar.