Great, fitness-focused domain name that blends in the words "gym" and "fantastic".
The word "Gymtastic" contains nine letters and three syllables. Successful brands using three syllable names include Verizon, Santander and Toshiba.
Gymtastic.com is a .com domain. Dot com domains are the most prestigious top-level-domain in the world, famously used by websites like youtube.com. When you own a .com, it is much easier to rank for your own name in search engines.