Two winters ago, my German friend gave me a sauna gift card for my birthday, which falls at the end of November, right in the middle of my annual sickness season. She’d spent years watching me try to survive winter on coffee, energy drinks, and every supplement imaginable, shaking her head in disapproval. It was a simple gift (and a bit of an intervention), but that one voucher changed my life, and turned me into a serial sauna gift-giver. How a Sauna Voucher Changed My Winte