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133 kilogram (293.21 pounds) extra wide, wide grip RAW bench press. Jef Koelewijn.

5 KG (11,02 pounds) sledgehammer 1 handed finger walk training with left. Jef Koelewijn.

5 KG (11,02 pounds) sledgehammer 1 handed finger walk training part 2. Jef Koelewijn.

5 KG (11,02 pounds) sledgehammer one handed finger walk at around 60 cm (23,62 inches) from the weight in about 38 seconds. Jef Koelewijn.

15 KG + 1,19 KG hexagonal dumbbel pinch grip lift and hold with the left hand for around 4 seconds. 16,19 KG (35,69 pounds) total. Jef Koelewijn.

15 KG + 1,19 KG hexagonal dumbbel pinch grip lifts with the right hand for 6 times. 16,19 KG (35,69 pounds) total. Jef Koelewijn.

Old time strongman bending a 0,6 x 18 cm nail in around 20 seconds with gloves on. Jef Koelewijn.

Martial arts training 2019 Hard right hand hammer fists part 2. Jef koelewijn.

Jef Koelewijn martial arts training 2019 One hard right hand hammer fist

Jef Koelewijn boxing training 2019 Two hard right hooks right after each other

Jef Koelewijn boxing training 2019 Shadow boxing while only throwing straight punches part 14

Jef Koelewijn boxing training Shadow boxing part 59

Contracting as many muscles as hard as possible. Jef Koelewijn.

Boxing training 2019 One hard and fast left straight power punch. Jef Koelewijn.

Boxing training 2019 Left straight and right straight training. Jef Koelewijn.

130 kilogram extra wide, wide grip RAW bench press. Jef Koelewijn.

101 kilogram (222.67 pounds), 50mm (1,97 inch) axle bar (fat bar) grip lift and hold for around 28 seconds. Jef Koelewijn.

Martial arts training 2019 Trying a new technique for two handed hammer fists. Jef Koelewijn.

Martial arts training 2019 Trying a new technique for right hand hammer fists. Jef Koelewijn.

Martial arts training 2019 Trying a new technique for left hand hammer fists. Jef Koelewijn.

Jef Koelewijn boxing training Shadow boxing 58. I'm mainly training for hard and fast punches.

125 kilogram (275.58 pounds) extra wide, wide grip bench press for 2 times. Jef Koelewijn.

Old time strongman training Bending a 0.6 x 18 centimetre nail in around 32 seconds with gloves on only. Jef Koelewijn

Mixed martial arts switch hitting combo. Jef Koelewijn.

Martial arts training 2019 Hard right hand hammer fists. Jef Koelewijn.

Jef Koelewijn boxing training 2019 Three hard jabs, left straights part 2

Jef Koelewijn shadow boxing part 57

Boxing training 2019 Combo training while switch hitting each time. Jef Koelewijn.

15 kilogram (33.07 pounds) hexagonal dumbbell pinch grip lift and hold with the left hand for around 8 seconds. Jef Koelewijn.

15 kilogram + 1,19 kilogram hexagonal dumbbell pinch grip lifts for 5 times. 16,19 KG (35,69 pounds) total. Jef Koelewijn.

Jef Koelewijn shadow boxing while only throwing straight punches part 11

Experimental military and mercenary hand to hand combat training Double punch and elbow. For against multiple attacking enemies. I thought this up myself, I don't know how effective this is. Jef Koelewijn.

Experimental military and mercenary hand to hand combat training Double punch 2. I thought this one up myself, I don't know how effective it is though. Jef Koelewijn.

Airsoft target shooting practise Moving around quite fast and shooting. Under 0,08 joule CE airsoft gun. Jef Koelewijn.

10 KG plate + 2,73 KG, strict plate curls with right for 3 times. 12,73 kilogram (28,06 pounds) total. Jef Koelewijn.

10 KG plate + 2,73 KG, strict plate curls with left for 3 times. 12,73 KG (28,06 pounds) total. Jef Koelewijn.

Brute power, iron bar bending. These were both 6 x 30 mm and 1 metre long iron flatbars. Jef Koelewijn.

Martial arts training 2019 One very hard single right power punch from the side 5. Jef Koelewijn

Martial arts training, one very hard single right power punch from the side 6. Jef Koelewijn.

Military and mercenary hand to hand combat training Double palm attack to the ears. Jef Koelewijn

Jef Koelewijn shadow boxing on 07-06-2019

Strongman Jef Koelewijn contracting as much muscles as possible and as hard and powerful as possible 6

Strongman Jef Koelewijn contracting as much muscles as possible and as hard and powerful as possible 5

Strongman Jef koelewijn contracting as much muscles as possible and as hard and powerful as possible 4

Jef Koelewijn martial arts training 2019 Right handed hammer fists

Jef Koelewijn martial arts training 2019 Left and right hammer fists and two handed hammer fists.

Explosive power training, contracting as many muscles shortly and very fastly. Jef Koelewijn. Old time strongman.

15 kilogram (33,07 pounds) hexagonal dumbbell pinch grip lift and hold with the left hand for around 4 seconds. Jef Koelewijn

12,5KG+10,23KG hexagonal dumbbell pinch grip hold for 5 seconds with 3 fingers at the weight marks and 2 fingers at the flat sides. 22,73 KG (50,11 pounds) total Jef Koelewijn.

Mixed martial arts, three hard pivot right hooks with a horizontal held fist. Jef Koelewijn