17 mei, 2015 in Heavy Tire Workout / Mace by Dennis de Groot #beastmode #dsports #smallgrouptraining #workout #sundaymorningworkout #health #power #hiit #tire #sledgehammer #dutch #dutchfitness #outdoor #unconventionaltools #unconventionalathlete #unconventionaltrainer #instasport #instafit #followback #netherland #fatloss #muscle #grow #fitnessaddict #fitnessandhealth #personaltrainer #crossfit #crosstraining A photo posted by dennis (@dsportsnl) on May 17, 2015 at 2:55am PDT