Jonah Rosner | Elite Running Scientist on Instagram: "Most runners are told to stretch their calves and Achilles to run better. The problem is that efficiency does not really come from flexibility. It comes from stiffness. Your calf muscle and Achilles tendon work together as one unit. When the Achilles is stiffer, it takes on more of that stretch. That allows the calf muscle fibers to work more isometrically (this is just a nerdy term we use to mean the muscle does not move much, but it makes u

Business | Motivation | Success on Instagram: "A Vision for a Safer Sky ✈️ Imagine boarding a flight knowing that even in the most extreme emergency, there’s a system designed to protect every passenger. A future where the cabin itself could separate and land safely isn’t science fiction anymore, it’s an idea challenging how we define aviation safety. This detachable cabin concept focuses on survival first. In critical situations, the passenger section could disengage, using parachutes and shock