The Iceman Cometh

Research  suggests that our biological thermostats are set to different levels; we feel the cold to different degrees, depending on our gender, fitness, age, diet, and how much sleep we have.

 We're simply not built for the cold We evolved on the Equator and have since migrated to all parts of the planet. Over 75% of the heat our bodies produce is released.

 Women really do feel the cold more than men, but this is because they are better at conserving heat than men. Mark Newton, a scientist at W.L. Gore, the company that makes Gore-Tex, explains: “Women have a more evenly distributed fat layer and can pull all their blood back to their core organs.”
This female heating system means that less blood flows to their hands and feet, and as a result they feel cold. Women are more efficient at keeping their core temperature high.

Sleep can also affect how cold or hot we feel. When we are tired we're more sensitive to changes in temperature.
Diet can  also make a difference.

How to keep warm:
Clothing Layering is key. Remember, the more skin on show, the colder you'll feel.

Food Eating regular meals makes a big difference if you're trying to keep warm, but be sure to include carbohydrates. Soup is a great winter warmer: try bean and vegetable, lentil and tomato or pea and ham.

Alcohol and caffeine Avoid drinking too much of either if you're trying to stay warm. Both increase blood flow to the skin, and while you will feel warmer, your body is losing heat.

 Exercise Outdoors Dress in layers that you can remove as soon as you start to sweat and then put back on as needed. First, put on a thin layer of synthetic material, such as polypropylene, which draws sweat away from your body. Avoid cotton, which stays wet next to your skin. Next, add a layer of fleece or wool for insulation. Top this with a waterproof, breathable outer layer. A heavy down jacket or vest may cause you to overheat if you're exercising hard. If you're lean, you may need more insulation than someone who is heavier. If it's very cold, consider wearing a face mask or scarf to warm the air before it enters your

Protect your hands, face, and ears.

Frostbite is most common on exposed skin, such as your cheeks, nose and ears, but it also can occur on hands and feet. Early warning signs include numbness, loss of feeling or a stinging sensation. If you suspect frostbite, get out of the cold immediately and slowly warm the affected area — but don't rub it since that can damage your skin. If numbness continues, seek emergency care.

Stay well-hydrated.

And consider skipping ( I know) your workout or moving it indoors if the weather gets really bad.

Sources: The Mayo Clinic
              The Sunday Times