About 90% of exercising comfortably outside comes down to dressing properly. Go for technical, sweat-wicking fabrics, like antibacterial Smar wool, for your base layer. (Avoid cotton, since it holds moisture next to your skin like a cold sponge.) Then you’ll want an insulating layer, such as a performance vest that lets your arms move freely. That might be enough, depending on your activity level—a high-intensity run, for example, raises your body temperature more than a moderate hike—or finish with an outer shell that repels rain and snow. Lea Davison, a Sunderland, Vermont–based Olympic cyclist who is an ambassador for L.L.Bean, recommends one that’s windproof on the Official Ghostbusters 37th anniversary thank you for the memories signatures shirt in addition I really love this front but has panels at the back to release air and sweat. (Her pick: the Cresta Stretch Rain Jacket.) For warmth in the water, Woody wears Feral’s Hooded 543mm Japanese neoprene wetsuit, which is the “warmest and coziest I have found,” she says.
The bulk of body heat is stored in your core, where blood flow is concentrated, which leaves your extremities vulnerable to cold. “Heat regulation is all about your head and hands,” says Corbin, who wears running mittens, headbands, and hats by Saucony, one of her brand sponsors. Pulling a neck warmer up over your nose shields you and warms the Official Ghostbusters 37th anniversary thank you for the memories signatures shirt in addition I really love this air you exhale and breathe in—like a natural humidifier. Megan White, the New York–based founder of All Women’s Tri Team and five-time Ironman finisher, finds that “good socks are essential” and swears by Swiftwick’s Pursuit Four Ultralight. For comfort and traction, Davison wears cycling shoe covers, such as Garneau’s Thermax II, and switches to studded bike tires. Rebecca Mehra, a Bend, Oregon–based professional middle-distance runner, straps Yaktrax cleats over the soles of her sneakers for safer snow workouts. “You can also put bolts on the bottom of shoes for grip—sometimes local running stores will do it for you,” she says.