Hey, summer camp in Washington Dc. 
That is wonderful. How long will you be in DC? Washington DC is a great place to ride bike around.
Gosh, its been a few years. I heard biking can make you drop seriously weight, 60 lbs effortlessly, have you used it for fitness or pure enjoyment and hobby?
I ride bike only for enjoyment. But it does have health benefit. 
Thats cool, the trails around the white house are sometimes guided so that's interesting. Sometimes you can rent a bike, have you ever done that?
I have not rented a bike. I brought my own bike here. Do you like to ride bike?
Yeah, I have been riding for a short time though. The rental bikes can be good for trials that require a good sturdy bike. The Capitol Crescent Trail has cool views and is kind of long so a comfortable seat is worth the fee. 
That's a great suggestion. So far, I have only rode bike to classes. I will try the rental bike when I go on to those trails. 
I know it rains a lot so if you are caught in the rain going of coming from class, remember you can store a poncho alongside you tire pump. 
You are right. Weather is very unpredictable here in DC, especially in spring. I always carry a rain jacket in my backpack. I also have a rain cover for the backpack.