Dr. John Jaquish (@drjaquish) is a biomedical engineer and the inventor of both a world-changing exercise system that focuses on variable resistance, the X3 Bar- used by Dr. Shawn Baker, Luis Villasenor, Dr. Kevin Stock, and many other keto and carnivore athletes - and the world’s most effective bone density building medical device - Osteostrong. He is also the author of a new book, Weight Lifting is a Waste of Time, questioning the traditional suggestions of weight lifting and laying out a more effective and efficient method to build lean muscle and health.