Bear crawls aka bear walks are an awesome strength and conditioning exercise but are commonly performed incorrectly. This is the proper way to do bear walks. The common mistake is to keep your butt up high in the air and allow your lower back to round. This can be problematic for people with glass backs and should be avoided. Performing them as demonstrated is a great total body exercise that really works the core musculature and the stabilizer muscles of the shoulder. This is way better than external rotations and other such isolation movements.
This exercise is way harder than it looks when done properly. Try to work up to 50-100 yard sets and increase your speed only if form is perfect.
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