As the seasons change, it's a good time to revaluate our own rhythm of life and see if any change is in order. We, as humans, are routine oriented; we tend to do the same things on the same days over and over again. Even when our routine is full of "good" things, we still many need to shake up and change our routine every once and awhile.  

This goes for workouts too. I like to revise my clients' routines as the seasons change; as well as my own routine. The weather dictates some of this change; less outdoor walking and running and more indoor activities. But regardless of weather, shaking up the intensity and focus of your workout can be beneficial. Moving from more strength oriented workouts to more power or agility and balance workouts can be both beneficial and energizing. Ask your trainer for some help in shaking up your normal workout routine; both in the gym with them and on your own.