I was introduced to Harness by Yelp back in February and I have been keeping in touch ever since.
This little gem is located in the up and coming Hingetown neighborhood. Most classes are 45 minutes of climbs and sprints to the beat of the music with some upper body work. The whole room is dark which really helps you get in the zone. You have the option of bringing/renting (3$) cycling shoes or wearing regular shoes. It is your choice but I recommend the cycling shoes.
The Bike: When you go for your first ride show up a little early so you can figure out what the height of your seat should be, how close you should be to the handle bars and the comfortable height of the handle bars. The friendly instructors are always more than willing to help with this task.
Signing up: These classes are a hot commodity and there is a science to getting in. The schedule for the week opens at noon on Mondays (you can buy a series package that will give you access to the schedule on Sundays at noon.) You basically need to be ready exactly at noon I have seen all the classes I want gone by 12:06pm. However, they do offer a waiting list and every time I have been on it I eventually got into the class.
Cost: Classes are 15$ and they offer different packages on their website. They also offer happy hours classes on Fridays for 5$ and two free community rides (usually taught by an assistant instructor) during the week. I would suggest those classes if you are unsure about cycling or on a budget.
Instructors: I've had so many of them at this point but I think my favorite is Kristin O. I just felt like she married yoga and cycling together in her class. All the instructors bring great energy and motivation. Most of them take the time to learn your name and really make you feel welcomed. The only criticism I have is some have a tendency to tell you how much time you have left in your ride. I know that motivates some but I would rather not know.
Conclusion: take a ride at Harnesscycle you won't regret it!!