 [ Symptoms ] at times i feel light headed jittery shakes tingely all over cold sweats i experience this usually when sitting i am afraid to stand up while feeling this for fear of passing out i have experienced this in church as well as at home while sitting could be any time of day sometimes experience this after strenuous exercise such as mowing the grass on a hot summer afternoon [ Disease ] not all people are sexperts so i consider all questions to be valid there are no dumb questions just unanswered questions and if you can not ask your most basic or intimate questions to a medical provider for a straight and serious answer who can you ask if you thing on line questions about sex are amusing you should spend a day with me in an adolescent health clinic feel free to answer some of the basic sex questions if you know the answer but be nice you were young and uninformed at some point in your life as well