Process flow diagram - Typical oil refinery. This is a schematic process flow diagram of the processes used in a typical oil refinery. This process flow diagram (PFD) example was redesigned from the Wikimedia Commons file: RefineryFlow.png. [commons.wikimedia.org/wiki/File:RefineryFlow.png] This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Each gym also provides its members with access to state-of-the-art equipment. While members need to be 18 years old to sign up individually, those who are at least 14 can sign up with a parent or legal guardian.
No hard and fast, pediatrician-recommended rule exists that kids should start gymnastics at a certain age. Most gyms don't even have a specific rule. Some gyms have tot classes for children as young as 18 months and some have beginner classes for 12-year-olds. However, some guidelines can help parents decide at what age their children should start gymnastics.