I've been to the gym in Concord, Walnut Creek and San Francisco. I find the gyms to be generally clean but sometimes too crowded. I dont like that most of the 24hr gyms make you sign up to use the machines but I do like that there are a variety of machines. In the Concord gym, you can bring your own headset, plug it into the machines, and listen to the tvs hanging on the walls. You can even switch the channels to listen to what's playing on the other tvs. Pretty convenient.
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