US Copyright Office – Statement of Policy in the Federal Register

• “A selection, coordination, or arrangement of exercise movements, such as a compilation of yoga poses, may not be copyrighted where the particular movements and the order in which they are to be performed allegedly result in improvements in one’s health or physical or mental condition because it can be construed as functional system or process (which is exempt from copyright protection under 17 U.S.C. §102 above). (See, e.g., open Source Yoga Unity v. Choudhury, 2005 WL 756558, *4, 74 U.S.P.Q.2d 1434 (N.D. Cal. 2005)“
• “Compilation of photographs of the poses or video of yoga practice routine may be copyrighted (the movement, scenery, music and etc. as a whole) but not the exercise or the movement itself.“

Federal Register