Mechanical evidence that flamingos can support their body on one leg with little muscular force. (sciencenews.org)
In this technology, resistance starts from circular cams which coil once muscular force is applied. (flexmastergeneral.com)
Learning to move in Halasana without excessive muscular force will develop the intelligence necessary for safe practice, where the lift in the spine comes from a sense of suppleness, not force. (yogajournal.com)