Exercising is essential for keeping our bodies healthy. Here in Los Angeles and the San Fernando Valley, we have the luxury of extraordinary weather mostly year-round. However, even we aren't immune to the reduced daylight hours, colder temperatures and rainy days, that can make us want to skip our exercise routines. However, during the winter months it is actually more important than ever to keep up with healthy exercise habits, in order to keep your immune system strong, and to prevent against emotional stressors such as depression which many people are very prone to during the winter.