Muscle spindles cause two things to happen: 1) the muscle being stretched (agonist) contracts to prevent you from going too far too fast in that stretch; and 2) the opposing muscle force (antagonist) is inhibited (prevented from contracting) so that that muscle doesnât pull that stretch further.he muscle spindleâs reflex contraction of its associated muscle simultaneously causes the antagonist muscle group to relax, which is called reciprocal inhibition. The muscle spindle serves as an alert to the muscles; they are located in the muscle belly and sense muscle stretch.
âIt always seems impossible until its done.â. Nelson Mandela quotes (South African Statesman First democratically elected State President of South Africa (1994), 1993 Nobel Prize for Peace, b.1918)
Impossible  is a song by Barbadian recording artist Shontelle. It is the lead single from her second studio album, No Gravity (2010). The song was written by Arnthor Birgisson and Ina Wroldsen, and produced by Birgisson. It was released digitally on 9 February 2010. Impossible peaked at number 13 on the Billboard Hot 100 in the United States, number 33 in Canada, number nine in the United Kingdom and number five in Denmark.