As the days get longer and nicer, I put a 25lb pack on and go for 4 miles every other day or at least 3 days a week.
If the weather is crappy, I pop in am excercise video that has circuits usually that contain 3 minutes of strength, 2 mins. cardio, and 1 minute abs. I work different muscles, various cardio, and different abs excercises with each ciruit.
I do a half hour work out in the living room and it really helps when I can't do the road work out side.
I try and stay fit all year now. With Spring Bear season starting in April, Utah mule deer the first week of August, I should be in good shape come Sept. 1.
Paul