Kalaripayattu (Kalari) is an ancient Vedic martial art (some scholars opine that Bodhi Dharma, the founder of Kung Fu was a Kalari master). It is a complete personality transforming and healing system. With the help of different vyāyāmas (dynamic exercises) and āsanas (static postures), it enables you to reach several goals on multiple levels. Ingenious yet simple elements of Kalari not only strengthen the physical body, but also reshape the consciousness adding more energy, mental stamina, sharpness, and confidence. It manifests in life as higher self-esteem, determination, and ability to withstand the life’s hurdles. It turns you into a more confident and grounded person. Kalari practice is built with the purpose of developing elasticity and flexibility on the one hand, and durability and strength on the other hand. Kalari includes a sequence of dynamic movements and āsanas to strengthen the upper body, straighten the spine and “opening up” the hip joints. This is especially useful in the current time when we spend most of our hours working at a desk or on a computer.

WHAT IS KALARIPAYATTU PRACTICALLY?
See this:
https://www.youtube.com/watch?v=5FJu0Soluvw