Our coaches and trainers won’t be helping with this one: Nighttime is when our skin can completely rejuvenate and recover, according to Dr. Miriam Vega Gonzalez, MD, a board-certified dermatologist based in Philadelphia. It’s when we can pack on all the lotions, serums, and creams we want without worrying about clogging our pores or burning our skin like we might during the day when training or competing.  That s...