English: An example of a hold-relax proprioceptive neuromuscular facilitation (PNF) technique used to strengthen the hamstrings. The hamstring is put into passive stretch followed by hip extension to push against the therapist for 10 seconds.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.