0:17 play_arrow MMA ground and pound training Punches and hammer fists into the sand 4 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:13 play_arrow MMA drop hammer fist into the sand Jeffrey Koelewijn visibility 2 schedule vor 6 Jahren favorite
0:20 play_arrow 7,2 kilogram right hand 20 cent coin lateral pinch grip lift with a bend arm Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:45 play_arrow Old time strongman JK bending a 5,5 x 140 mm nail for only one part Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:24 play_arrow 6,7 KG right hand 20 cent coin lateral pinch grip lift with a straight arm Jeffrey Koelewijn visibility 2 schedule vor 6 Jahren favorite
0:23 play_arrow RB 100 hand gripper inverted closes with the right hand and without setting x 6 Jeffrey Koelewijn visibility 3 schedule vor 6 Jahren favorite
0:36 play_arrow Fighting sports Defense training and forearm toughening 4 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:29 play_arrow RB 100 hand gripper inverted closes with the left hand and without setting x 6 Jeffrey Koelewijn visibility 4 schedule vor 6 Jahren favorite
0:20 play_arrow MMA training 2019 Left elbows 2 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:20 play_arrow Toughening the sides of my fists 4 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:20 play_arrow Power training Contracting as many muscles as hard as possible 15 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:25 play_arrow Power training Contracting as many muscles as hard as possible 17 Jeffrey Koelewijn visibility 0 schedule vor 6 Jahren favorite
0:14 play_arrow JK power training Contracting as many muscles as hard as possible Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:24 play_arrow Toughening the sides of my fists 3 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:19 play_arrow JK chest beating 2019 part 33 Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:40 play_arrow Fighting sports Defence training and forearm toughening 6 Jeffrey Koelewijn visibility 3 schedule vor 6 Jahren favorite
0:49 play_arrow Old time strongman bending 7mm thick iron double underhands Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:49 play_arrow Pushing against a heavybag with the head Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:50 play_arrow Right hand improvised finger training with a small clamp Jeffrey Koelewijn visibility 0 schedule vor 6 Jahren favorite
0:51 play_arrow 11 KG natural stone bicep curls Jeffrey Koelewijn visibility 0 schedule vor 6 Jahren favorite
0:52 play_arrow Crushing a thicker kind of can Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:50 play_arrow Finding the north and south pole of a magnet with a cheap compass Jeffrey Koelewijn visibility 1 schedule vor 6 Jahren favorite
0:50 play_arrow A kubotan (ninja weapon) 2 Jeffrey Koelewijn visibility 2 schedule vor 6 Jahren favorite