Heat can feel amazing or completely overwhelming during your period, depending on the day. Here's what's actually happening in your body during the first few heavy-flow days versus later in your cycle, why we recommend rest early on, what Traditional Chinese Medicine has to say about warmth and menstruation, and when an infrared sauna session can genuinely help with cramps, bloating, and tension. Grounded guidance, not a one-size-fits-all rule.

Your tolerance for cold isn't fixed — it shifts across your menstrual cycle as hormones rise and fall. Here's what actually changes phase by phase, when cold exposure tends to feel best, when your body is asking for rest instead, and how to build a routine that works with your cycle rather than against it. Practical, phase-by-phase guidance for cold plunges and cold showers alike — grounded in hormone science, not a one-size-fits-all schedule.