Ti Sana has the ambiance of a monastery: an ancient but very smart monastery. Set in the heart of a small Italian village, midway between Milan and Lake Como, the spa has been created from an eighteenth century noble’s house and is intimate, a cluster of buildings looking inwards on itself – all soft stone and thick rustic beams.  It’s on a firm mission – to bring you to awareness about your health; to encourage you to make conscious choices about your diet, exercise and general lifestyle – and they’re taking no prisoners.  The owner, Erica d’Angelo, and her team are young and highly committed – they walk their talk every step of the way.  But there’s nothing flakey about this place – everything they do is based on the firmest science they can find. First stop for any of their detox retreats is a series of tests at the medical spa, followed by a consultation with the spa doctor.  There’s no hiding, no fudging the issue – if you fib on your questionnaire about …