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2. Stall (fluid dynamics) - Wikipedia

   en.wikipedia.org/wiki/Stall_(fluid_dynamics)

   An aerodynamic twist can be introduced to the wing with the leading edge near the wing tip twisted downward. This is called washout and causes the wing root to stall before the wing tip. This makes the stall gentle and progressive. Since the stall is delayed at the wing tips, where the ailerons are, roll control is maintained when the stall begins.

3. Wing twist - Wikipedia

   en.wikipedia.org/wiki/Wing_twist

   Wing twist is an aerodynamic feature added to aircraft wings to adjust lift distribution along the wing.. Often, the purpose of lift redistribution is to ensure that the wing tip is the last part of the wing surface to stall, for example when executing a roll or steep climb; it involves twisting the wingtip a small amount downwards in relation to the rest of the wing.

4. Gyroscopic exercise tool - Wikipedia

   en.wikipedia.org/wiki/Gyroscopic_exercise_tool

   A gyroscopic exercise tool is a specialized device used in physical therapy to improve wrist strength and promote the development of palm, wrist, forearm, and finger muscles. It can also be used as a unique demonstration of some aspects of rotational dynamics .

5. Shop the Small Exercise Ball That Can Do It All — Just $14

   www.aol.com/shop-small-exercise-ball-just...

   Us Weekly has affiliate partnerships so we may receive compensation for some links to products and services. Feel like your no-equipment workouts just aren’t doing enough? Hate the cost and ...

6. Coffin corner (aerodynamics) - Wikipedia

   en.wikipedia.org/wiki/Coffin_corner_(aerodynamics)

   Coffin corner (also known as the aerodynamic ceiling [1] or Q corner) is the region of flight where a fast but subsonic fixed-wing aircraft's stall speed is near the critical Mach number, at a given gross weight and G-force loading. In this region of flight, it is very difficult to keep an airplane in stable flight.

7. Back pain? Doctors say this exercise ball can offer relief ...

   www.aol.com/lifestyle/back-pain-doctors-exercise...

   An exercise ball can build up your core muscles, which are crucial to help manage back issues, Dr. Medhat Mikhael, a pain management specialist and medical director of the non-operative program at ...