Dwayne Jones is almost flat for muscles, and one more proof of this is the latest video posted on his Instagram profile with over 138 million followers.
The popular Rock has recently revealed the secret to his monumental biceps, and in the video shows the exercise that reached the incredible volume of 50 centimeters.
The classical exercise concentration bicep curl with a tag performs it undercut instead of sitting.
Your legs should be in a position of kneeling, about 15 centimeters apart from the shoulders, with your right back. The elbow of the hand with which you do the exercise should be positioned in the inner part of the leg, in the knee. With your other palm, rely on your other leg.
Start with three sets of 10 reps for each hand and practice concentrated and slow.