Here is a list of mats, padding, training weapons, etc.
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Free Mats at the YMCA!
Of course, you don’t have to host your study group in your home. The YMCA, your local gym, or the church that you attend could all be great places to train ~ using their equipment for little to no cost. There may be an additional benefit in hosting your study group there because you could advertise to the organization’s membership.