I love the fact kids are doing Kabbadi.
Many people think it was the 6th Guru who introduced wrestling/Kabbadhi and the Martial streak to Sikhism. This is incorrect.
The second Guru, Guru Angad encouraged and actually taught wrestling. The evidence for this is:
Biography
Gurdwara Mal Akhara Sahib :- It is at this place that Sri Guru Angad Dev Ji spent most of his time holding religious conference (Diwans) and giving discourse to Sikh Sangat. It is pertinent to mention that here Guru Ji made arrangements for teaching Gurmukhi script to children and organized wrestling matches to make them physical strong. This place is particularly important as Guru Ji held religious conference with 'Siddhas' and also developed Gurmukhi script. It was a wonderful place where two 'Langars' were run at the same -one 'langar' of Guru Shabad presided over by Guru Ji and the other 'langar' of food (Community kitchen) run by Mata Khiwi . Even Guru Granth sahib Ji bears testimony to this practice "Balwand Khiwi nek jan jis bahuti chhao patrali, Langar daulat vandiay ras amrit kheer ghiali"(SGGS page-967) (Balwand says that Khivi, the Guru's wife, is a noble woman, who gives soothing, leafy shade to all. She distributes the bounty of the Guru's Langar; the kheer - the rice pudding and ghee, is like sweet ambrosia.) Here practically demonstrated the principal of "Tan Man Thevai Haria" (body and mind blossom forth.)