Instagram is home to a number of Instagrammers who build and cater to niche communities. Makeup experts, travelers, models, photographers, bakers, bikers, and more find ways to tap into a shared passion through one of the world’s most popular photo sharing apps. Fitness Instagrammers are some of the most ardent users with the most engaged and active fan bases.These fitness-focused influencers come from a variety of different backgrounds — some were bodybuilders, others were models; some are mothers, others are trainers; some have written books, others have expanded into clothing lines, apps, and training programs. Instagram’s fitness community is more than just gym rats and #fitspo, it’s a starting place for many looking to change their lives and a social media staple for those looking to stay committed to their fitness goals.