It's important to note that when a muscle contracts it pulls equally on both ends, so stabilization would need to occur to ensure the exercise is done without breaking form. (skinnyfit.com)
Black Ops III occasionally breaks form with the linear corridor shooting that has defined the series in favor of set - piece boss battles. (kotaku.com)
For the push - up test, you complete as many as you can before breaking form or you do as many as you can in one minute. (cathe.com)