Great, fitness-focused domain name that blends in the words "gym" and "fantastic".
The word "Gymtastic" contains nine characters and three syllables. Three syllable names are used by established brands like Armani, Adobe and Vodafone.
Gymtastic.com is a dot-com domain. Dot com domains are the most valued domain extension in the world, famously used by websites like youtube.com. When you own a dot-com, it is much easier to rank for your own name in search engines.