You've all experienced the suck in the middle of a grueling workout and know how it can be difficult to focus on the task at hand when all you're trying to do is ignore the pain and get one more rep. However, one of the important aspects of your training is understanding how to balance form vs. intensity. Generally speaking, we tend to gravitate towards ensuring proper form, especially on repetitive movements that are low percentages of your 1RM. On the other hand, there comes a time on maximal lifts during which form can break down. In those cases, intensity (in an effort to find your max) can negatively affect ideal form and we get that.
Below is a good clip on the debate of form vs. intensity.
Handstand push ups
B. Accumulate 5 minutes of dead bug