The most common joints that receive repetitive stress from an ongoing Krav Maga training program are the shoulders, elbows, knees, wrists, and lower back. It is important to keep these joints strong in order to avoid aches and pains that may go along with this type of training. When performing punches repetitively, the shoulder and elbow have to do a lot of work to extend punches out and back. When making contact to a bag or pad when punching, you then add an additional force into the equation. When making contact, the wrist absorbs a large amount of force from compression, which is distributed up through the bones of your arm. This force can seriously jar your shoulder.

When the punch is delivered with proper mechanics, it is less likely to cause an injury. Just as important, the bones and connective tissues have to adapt to the impact that goes along with punching. You should always start slowly, even if you have perfect mechanics, and progress speed and strength appropriately.

Some Krav Maga students report pain in their lower backs from repetitive round kicks to a bag or pad. This might be due to the fact that their muscles are not yet strong enough to support the force they are generating to deliver strong round kicks. This is why it's important that you keep joints and connective tissues strong, not only for a healthy back but to sustain the force of the kicks you will be delivering. You need to keep your spine strong and mobile in order to move well.

The best way to avoid aches and pains in the commonly stressed joints from Krav Maga training is to keep joints strong and flexible. This way you have the ability to move through the proper ROM without forcing mechanics, and you have enough strength to support the force being generated.