Night sweat you can go to Long Island University on Flatbush Ave, near the D, Q and I think the W train line (Close to Fulton Street 4,5,3,2, and I think some other trains and walk south to Flatbush ave) on I think a Tuesday or A Thursday and they have a good indoor sweat after 6 pm. Den you check Prospect Park, dey normally have good sweat there too.