The Biohack Miami event in San Francisco took place at Shack15, a social club for founders and entrepreneurs. Tess Martinelli Biohacking is the trend of optimizing your physical and mental health for longevity. I went to a biohacking event to test out the buzziest longevity technologies. From red light therapy to neurofeedback, not all remedies are created equal. Don't be concerned, but I'm 24, and I'm already worrying about aging. I religiously reapply sunscreen throughout the day and keep...