In Chakra-Jnana Yoga emphasis is placed on keeping awareness on the chakras in hatha yoga and pranayama. This is done by first understanding how various yoga poses, and categories of poses, affect the chakra system.
Sequences are also performed according to the movement of energy in the chakras, and both standing and floor sequences may be done to move the energy up and down through the chakras. In this style of yoga, it is common to hold the primary poses for each chakra for several minutes so that the attention may be turned inward to feel the subtle prana energy.
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As a category forward bends may generally be said to benefit the root and sacral chakras. Primarily, forward bends influence the root chakra since they have a strong effect on the legs and hamstrings.
The root chakra is connected to the earth, and since the feet and legs connect our bodies to the earth, poses that benefit the feet and legs will have the greatest influence on the root chakra. This makes poses like the standing and seated forward bend some of the primary poses for the root chakra.
Since forward bends also affect the lower lumbar spine they have a secondary influence on the sacral chakra. This is because the nerves that travel to the organs exit the spine in the lumbar region.
The primary standing pose for the sacral chakra is the standing wide-angle forward bend since it targets both the lumbar region and the groin. In the seated postures the bound angle pose and happy baby are some of the strongest for opening the second chakra.