Shoulder and wrist problems can make plank pose difficult. Here are some variations to help people with limitations or grumpiness in their upper bodies to do plank.
This series of shoulder movements is great for making a cranky shoulder less cranky. I learned this from my teacher, Carol Stall, who learned it from her teacher, Donna Farhi.
Many people have bad posture in their lower bodies, including fallen arches or flat feet. I used to have one flat foot, but through yoga I learned exercises and posture to correct it.
