 [ 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 ] have you ever had your blood sugar checked you may be hypoglycemic