Stand up with your feet hip-distance apart. Then step one foot back and bend your knees. You should step back far enough so that your front knee stays over the front ankle when you bend. The back knee should be in line with the hip when it is bent. Being in the proper position will ensure that you don't injure your knee when you put pressure on it. Lower your body down far enough so that the back knee is close to the floor, but not touching it. As you go down, your front foot should stay flat on the floor and your back foot will bend so that the toes are only touching the floor. Putting pressure on the knee joint while trying to pop it will make the ligaments and bones move into slightly different positions than they would go into without added weight. This slight change may be enough to crack your knee. If knee bends are not your cup of tea, then you can bend both knees at the same time. Place your feet hip width apart and then slowly squat your body down. Be sure to move in a slow controlled manner, so that you can abandon the movement if it becomes painful.  Squatting like this uses your body weight to contract the knee joint further than it would normally go. This position may be extreme enough to crack a knee that has been hard to crack. It is important to be careful and controlled when doing squats. If you just release all control and let your body drop, it could injure your knees.
خذي وضعية تمرين الطعن. أد طعنات بطيئة متحكمًا بالحركة جيدًا. قومي بتمرين القرفصاء (الاسكوات) لطقطقة كلا الركبتين معًا إذا تطلب الأمر.