Hold a nationally accredited fitness certification highly preferred (ACE, ACSM, Cooper Institute for Aerobics Research, C.H.E.K, IFPA, NASM, NCSF, NESTA, NETA, NFPT, NSCA, PTA Global, W.I.T.S.) . TITLE Boxing Club is the world's leading boxing fitness brand that offers a full-body, authentic heavy-bag workout designed to build your fitness, control your breathing, and clear your mind.