Heavy sweat isn’t the only indicator of a good workout; feeling like your insides might burst from how much they burn is also a measure of success. That’s the kind exercise routine you can expect from Solidcore—intense, grueling but with very little impact on your joints and possibly your hairdo. The Pilates-based moves are performed on a Sweatlana machine, which is basically a souped-up reformer, and there’s a heavy emphasis on strengthening your core (hence the name). Instructors talk you through every move, help change your springs to adjust your machine’s resistance and keep you going with non-cheesy motivational phrases. Like most boutique fitness gyms, Solidcore offers personalized service, free towel service and small lockets to stow away your valuables. The gym has dozens of locations around the world, including two in Miami: Midtown, which opened in 2018, and Aventura, which opened in 2019.