If you’ve spent at least one summer here in NYC as an endurance athlete or somewhere else similarly subtropical (yes! subtropical!) then you already know how miserable those first few weeks of consistent hot weather can feel. But have you ever wondered what exactly is going on, and why eventually it gets a little less miserable as the summer progresses? Let’s take a deeper dive into heat acclimation and find out. What happens as you acclimate to the heat Three efficiencies oc