Static resistance is when you apply force against an equal amount of resistance, thereby creating force without movement. This is called isometric resistance. An example of an isometric exercise would be pressing the palms of your hands against each other, applying equal force on both sides. The muscles will tense, but there will be no contraction, as there was no shortening or lengthening of a muscle. Using a biceps curl as an example, when you raise your palm toward your shoulder by bending your elbow, your biceps muscle will shorten during the motion, causing the muscle to contract, while the opposing muscle, the triceps, lengthens in response. With isometric (static) exercise, this does not occur.