Pamela Reif's "7 MIN PLANK CHALLENGE / No Equipment" video is aimed at providing viewers with a workout routine to strengthen their core without the need for any equipment. In the video, she demonstrates seven different plank exercises that target different areas of the core, each lasting one minute. Her goal is for viewers to complete the entire routine, which will take exactly seven minutes. The routines vary in difficulty, making them suitable for individuals of all fitness levels.