Abstract: A workout system 10 as well as playground systems 12 are disclosed. The system 10 and 12 are particularly advantageous because each system 10 or 12 may be secured to a particular terrain via adjustable support members 14 to permit the systems 10 and 12 to support themselves on the terrain without the need of installing cumbersome construction footings to support the systems 10 and 12 onto the ground. Furthermore, the systems 10 and 12 are adapted to adjust the height of the accessories such as horizontal lift up bars 16, parallel lift up bars 18, or monkey bars 20.