What is twitter fitness 18?

As an AI language model, I don't have any information about specific Twitter accounts named "fitness 18". However, here is some general information about fitness and Twitter:

• Twitter is a popular social media platform that can be used to share fitness-related information and connect with others who have similar interests.
• Many fitness professionals, gyms, and fitness enthusiasts use Twitter to share workout tips, nutritious recipes, motivational quotes, and other health-related content.
• Some popular fitness-related hashtags on Twitter include #fitness, #workout, #fitspo, #health, and #exercise.
• Twitter can also be used to join virtual fitness challenges, find workout buddies, and share progress updates.
• It's important to be cautious when seeking fitness information on Twitter, as not all claims may be credible or safe. It's always a good idea to consult a certified fitness professional before embarking on a new exercise routine or nutrition plan.