Article continues below advertisementAfter teaching at SoulCycle for many years, Sydney Miller decided to embark on her own journey and open HOUSEWORK, which was founded in 2017 "as a side hustle." "I had gotten certified in Pilates and wanted to create that same music-driven, sweaty, addictive, community feel but on a mat in a way that felt good as a way to cross-train," the businesswoman exclusively tells OK!, adding that she slowly but surely gained more of a clientele through pop-ups and retreats.