Now that we have “sprung forward”, the sun is out a little longer, so go out for a walk, roll, or ride. Enjoy the sun by doing something active. You’ll be doing your body good–improving your physical fitness through exercise and greater vitamin D synthesis.
* Sun exposure to the arms and legs for 10-15 minutes. The amount of vitamin D produced depends on the intensity of the UVB in the sun and many other factors. Darker-skinned individuals may need 5-10 times more exposure than a fair-skinned person to make the same amount of vitamin D. In northern climates sunlight is too weak in parts of the year to make any vitamin D – a period referred to as ‘Vitamin D Winter’. – Source- http://sunshinevitamin.org.