Without a doubt, Maxercise is one of the, if the best, gym in Philadelphia. You can train with good old dumbbells and barbells if you like or if you are an advanced athlete take up kettlebells and clubbells. Or you take Brazilizian Jiu Jutsu from an elite World Champion. Also the owner, Steve Maxwell is one of the nicest guys you can meet and is very knowledgeable. Go once, you will be hooked.