Can you tell me some of the different types of fasting?

Last weekend I participated in the 30 Hour Famine where you completely fast for 30 hours to help out with childhood starvation. When I got done I noticed how much closer to God I had become. Can you please give me some other different types of fast that do not require you to give up all food because I want to do this long term so I cannot just become annerexic.