A couple other suggestions. In cold weather, even if you are running indoors and the gym is colder than usual, it helps to wear warmer garments over your entire body. If you feel a bit chilled, the muscles just won't fire up. The hydration point is excellent. We forget to get fully hydrated in cold weather. For this reason I often drink a quart of hot tap water before I work out. The heated water goes down a lot easier than cold water. I want to encourage you to revisit the comment regarding "high heel" shoes. I may be mistaken, but I believe the writer was not referring to high heels such as a woman might wear to the office or a party, but to the elevated heels which are the most common athletic shoe design in running and walking shoes. These shoes raise the heel about an inch above the toes. When you look at the side of the shoe, you can see it is somewhat wedge shaped along the sole. We've been trained by marketers to believe this raised back end of the shoe will "cushion the heel" but it creates an unnatural running gait of heel-toe, heel-toe. This heel-toe running gait has been implicated in quite a number of foot ailments such as plantar fascitis, bunion development, loss of strength in the toe box (where speed matters), and weak arches and ankles. Thus emerged a line of footwear with "zero elevation" where the toe and heel are both flat to the ground, although the shoe may have treads across the entire sole to elevate the foot above the road bed, which is good for outdoor traction and to avoid stone bruises. Indoor or track runners may have no tread at all. This type of shoe encourages the foot to strike somewhat evenly (heel and toe at same time) when you are walking and on the toe box when you are running. The transition from "high heels" to "zero elevation" takes months - up to a year - as our leg, knee, ankle, and foot system is accustomed to a life time of cushioned and supported athletic footwear. It takes time to stretch the ligaments and muscles back to their natural length. If you transition too quickly you will end up with sore ankles, lower legs, and feet. I tried the zero elevation shoes for plantar fascitis. I began in February wearing them for a couple hours a day, and by mid summer was backpacking 10 plus miles a day in zero elevation shoes. I haven't had any trouble with plantar fascitis since.
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