Over the past year, Lama Lobsang Palden has delivered a series of workshops that teach participants elements of various Tibetan breath yogas.  Included in his workshop series has been an introduction to "Tummo", the yoga of generating internal heat made famous by the Mahasiddha Naropa in the 10th Century.  Tsa Lung is the name for a variety of practices that teach practitioners how to develop vital energy (lung), or prana, in the energy channels (tsa) of the body.