This is a lovely 14-minute qigong exercise for the kidneys and their corresponding element of water by Mimi Kuo-Deemer: Yoga, Qigong and Mindfulness. In Chinese Medicine, Qigong exercises and their focus can change to reflect the season and its corresponding element in that season. Winter is the season when we focus on the element of water, which is associated with the yin organ of the kidneys. These exercises reflect this focus.
Different chakra energies provide different types of experiences. You can train yourself to cultivate and use these subtle energies for more diverse purposes.
QiCultivation.com - Information on using the tools and methods to better sense subtle, spiritual energies, as well as receive and interpret the messages, and use/direct those energies.
AnotherQ.com - Personal experiences with subtle, spiritual energy.
QigongByQuist.com - Using Qi and subtle energies to help you maintain your health and wellness.
QibyQ - Directing subtle energies to help the earth and humanity