discussed Cited "see, e.g." Woods v. Johnson We believe that the elimination of one of three locations a prisoner can hide a weapon is a valid regulation that is “reasonably related to legitimate penological interests.” 4 Powell, 959 F.2d at 25. 5 Id. 6 Hill v. Estelle, 537 F.2d 214 (5th Cir. 1976); see also Smith v. Bingham, 914 F.2d 740 (5th Cir. 1990), cert. denied, 499 U.S. 910 (1991) (denial of male prisoner right to attend classes at female prison did not violate Equal Protection Clause).