First off - hold your 70's judgement of Jazzercise including distant memories of leg warmers. This isn't your mama's Jazzercise :)
Phoenix Jazzercise is a dedicated center that is equipped with weights, mats, tubes and balls. With over 40 classes each week (as early as 5:45 a.m. and as late as 6:50 p.m.) - you just need to show up with your tennis shoes - no more excuses! Oh and if you need child care check the schedule as some classes have a sitter you can pay extra for.
One of the things I love about Jazzercise is that I get a complete workout in 60 minutes (stretch, cardio and sculpting). If you don't have a lot of time and just want a good workout without the meat market of traditional gyms you have come to the right place. Annette and all of the instructors there make this a fun and comfortable workout for all skill levels - they offer suggestions for low impact/high impact so your workout is really what works for you. I like to mix it up with some of the newer class formats like Strength 60, Core and Fusion. Highly recommend you give it a try.