5. Jen Sinkler
Example video (above): How to Make Burpees Work For You
What else you’ll find: Jen Sinkler is a kettlebell instructor, an Olympic lifting coach through USA Weightlifting, and a certified coach through Onnit, Primal Move, Progressive Calisthenics, TACTIF, CrossFit, and DVRT. She’s author and creator of Lift Weights Faster. Her YouTube channel includes challenges and tips for people who want to improve their strength training.
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