What is that way of asking!!!
seriously I can't get did u meant the want to! or that u've shivering attack at that time???
any way if the first then u must start the brain training to make urself more controlling its thinking just this need first the focus on works ad if u had got a GF this will regulate this, and help u then u must start to look at what bother u those times and treat to get rid of any stress or what disturb u..
if the 2nd then if no pain developed then u may had just a psyc. problem related to one past or u had some problems in the reflexes pass to the brain at that time to make this a whole body reflex by shivering sometimes the thyroid problem may reveal a relation,,,
choose what u meant and then detail what u want coz. these r just few ans. not satisfying the needed ans.
by the way no need to tell ur name just the user name is enough...