Keep Your Beach Body All Year.

Spend one perfect hour at the gym twice a week -- and keep your beach body all the way through sweater season.

Just because summer's over and your skimpy garb has found its way to the back of the closet, you're not about to sideline your fitness resolutions until January 1. Very smart thinking: Stay in shape now, and it'll be a breeze to avoid holiday weight gain later and rock your summer body all year long.

With that (and your fall schedule) in mind, we've stripped your fall fitness plan down to the bare essentials to create an hour-long routine that does it all. The key is high-intensity strength training -- three moves in a row without rest -- that hits all your major muscle groups, followed by cardio intervals. This keeps your heart rate elevated and your metabolism cranking. Get to it -- then flaunt your fit self in your most revealing PJs. After all, it's toasty inside.

Keep Your Beach Body All Year